chore: Update discovery artifacts (#1304)

## Discovery Artifact Change Summary:
cloudbuildv1[ [More details]](https://github.com/googleapis/google-api-python-client/commit/8b4a096e56ec6d0c1109e01974c690164c873259)
filev1beta1[ [More details]](https://github.com/googleapis/google-api-python-client/commit/f8fb4dfe2bc0cc66332f75af624514f8dc67dd66)
diff --git a/docs/dyn/cloudbuild_v1.projects.triggers.html b/docs/dyn/cloudbuild_v1.projects.triggers.html
index de23dd4..368828c 100644
--- a/docs/dyn/cloudbuild_v1.projects.triggers.html
+++ b/docs/dyn/cloudbuild_v1.projects.triggers.html
@@ -334,6 +334,7 @@
   "description": "A String", # Human-readable description of this trigger.
   "disabled": True or False, # If true, the trigger will never automatically execute a build.
   "filename": "A String", # Path, from the source root, to the build configuration file (i.e. cloudbuild.yaml).
+  "filter": "A String", # Optional. A Common Expression Language string.
   "github": { # GitHubEventsConfig describes the configuration of a trigger that creates a build whenever a GitHub event is received. This message is experimental. # GitHubEventsConfig describes the configuration of a trigger that creates a build whenever a GitHub event is received. Mutually exclusive with `trigger_template`.
     "installationId": "A String", # The installationID that emits the GitHub event.
     "name": "A String", # Name of the repository. For example: The name for https://github.com/googlecloudplatform/cloud-builders is "cloud-builders".
@@ -357,6 +358,12 @@
     "A String",
   ],
   "name": "A String", # User-assigned name of the trigger. Must be unique within the project. Trigger names must meet the following requirements: + They must contain only alphanumeric characters and dashes. + They can be 1-64 characters long. + They must begin and end with an alphanumeric character.
+  "pubsubConfig": { # PubsubConfig describes the configuration of a trigger that creates a build whenever a Pub/Sub message is published. # Optional. PubsubConfig describes the configuration of a trigger that creates a build whenever a Pub/Sub message is published.
+    "serviceAccountEmail": "A String", # Service account that will make the push request.
+    "state": "A String", # Potential issues with the underlying Pub/Sub subscription configuration. Only populated on get requests.
+    "subscription": "A String", # Output only. Name of the subscription. Format is `projects/{project}/subscriptions/{subscription}`.
+    "topic": "A String", # The name of the topic from which this subscription is receiving messages. Format is `projects/{project}/topics/{topic}`.
+  },
   "substitutions": { # Substitutions for Build resource. The keys must match the following regular expression: `^_[A-Z0-9_]+$`.
     "a_key": "A String",
   },
@@ -603,6 +610,7 @@
   "description": "A String", # Human-readable description of this trigger.
   "disabled": True or False, # If true, the trigger will never automatically execute a build.
   "filename": "A String", # Path, from the source root, to the build configuration file (i.e. cloudbuild.yaml).
+  "filter": "A String", # Optional. A Common Expression Language string.
   "github": { # GitHubEventsConfig describes the configuration of a trigger that creates a build whenever a GitHub event is received. This message is experimental. # GitHubEventsConfig describes the configuration of a trigger that creates a build whenever a GitHub event is received. Mutually exclusive with `trigger_template`.
     "installationId": "A String", # The installationID that emits the GitHub event.
     "name": "A String", # Name of the repository. For example: The name for https://github.com/googlecloudplatform/cloud-builders is "cloud-builders".
@@ -626,6 +634,12 @@
     "A String",
   ],
   "name": "A String", # User-assigned name of the trigger. Must be unique within the project. Trigger names must meet the following requirements: + They must contain only alphanumeric characters and dashes. + They can be 1-64 characters long. + They must begin and end with an alphanumeric character.
+  "pubsubConfig": { # PubsubConfig describes the configuration of a trigger that creates a build whenever a Pub/Sub message is published. # Optional. PubsubConfig describes the configuration of a trigger that creates a build whenever a Pub/Sub message is published.
+    "serviceAccountEmail": "A String", # Service account that will make the push request.
+    "state": "A String", # Potential issues with the underlying Pub/Sub subscription configuration. Only populated on get requests.
+    "subscription": "A String", # Output only. Name of the subscription. Format is `projects/{project}/subscriptions/{subscription}`.
+    "topic": "A String", # The name of the topic from which this subscription is receiving messages. Format is `projects/{project}/topics/{topic}`.
+  },
   "substitutions": { # Substitutions for Build resource. The keys must match the following regular expression: `^_[A-Z0-9_]+$`.
     "a_key": "A String",
   },
@@ -899,6 +913,7 @@
   "description": "A String", # Human-readable description of this trigger.
   "disabled": True or False, # If true, the trigger will never automatically execute a build.
   "filename": "A String", # Path, from the source root, to the build configuration file (i.e. cloudbuild.yaml).
+  "filter": "A String", # Optional. A Common Expression Language string.
   "github": { # GitHubEventsConfig describes the configuration of a trigger that creates a build whenever a GitHub event is received. This message is experimental. # GitHubEventsConfig describes the configuration of a trigger that creates a build whenever a GitHub event is received. Mutually exclusive with `trigger_template`.
     "installationId": "A String", # The installationID that emits the GitHub event.
     "name": "A String", # Name of the repository. For example: The name for https://github.com/googlecloudplatform/cloud-builders is "cloud-builders".
@@ -922,6 +937,12 @@
     "A String",
   ],
   "name": "A String", # User-assigned name of the trigger. Must be unique within the project. Trigger names must meet the following requirements: + They must contain only alphanumeric characters and dashes. + They can be 1-64 characters long. + They must begin and end with an alphanumeric character.
+  "pubsubConfig": { # PubsubConfig describes the configuration of a trigger that creates a build whenever a Pub/Sub message is published. # Optional. PubsubConfig describes the configuration of a trigger that creates a build whenever a Pub/Sub message is published.
+    "serviceAccountEmail": "A String", # Service account that will make the push request.
+    "state": "A String", # Potential issues with the underlying Pub/Sub subscription configuration. Only populated on get requests.
+    "subscription": "A String", # Output only. Name of the subscription. Format is `projects/{project}/subscriptions/{subscription}`.
+    "topic": "A String", # The name of the topic from which this subscription is receiving messages. Format is `projects/{project}/topics/{topic}`.
+  },
   "substitutions": { # Substitutions for Build resource. The keys must match the following regular expression: `^_[A-Z0-9_]+$`.
     "a_key": "A String",
   },
@@ -1180,6 +1201,7 @@
       "description": "A String", # Human-readable description of this trigger.
       "disabled": True or False, # If true, the trigger will never automatically execute a build.
       "filename": "A String", # Path, from the source root, to the build configuration file (i.e. cloudbuild.yaml).
+      "filter": "A String", # Optional. A Common Expression Language string.
       "github": { # GitHubEventsConfig describes the configuration of a trigger that creates a build whenever a GitHub event is received. This message is experimental. # GitHubEventsConfig describes the configuration of a trigger that creates a build whenever a GitHub event is received. Mutually exclusive with `trigger_template`.
         "installationId": "A String", # The installationID that emits the GitHub event.
         "name": "A String", # Name of the repository. For example: The name for https://github.com/googlecloudplatform/cloud-builders is "cloud-builders".
@@ -1203,6 +1225,12 @@
         "A String",
       ],
       "name": "A String", # User-assigned name of the trigger. Must be unique within the project. Trigger names must meet the following requirements: + They must contain only alphanumeric characters and dashes. + They can be 1-64 characters long. + They must begin and end with an alphanumeric character.
+      "pubsubConfig": { # PubsubConfig describes the configuration of a trigger that creates a build whenever a Pub/Sub message is published. # Optional. PubsubConfig describes the configuration of a trigger that creates a build whenever a Pub/Sub message is published.
+        "serviceAccountEmail": "A String", # Service account that will make the push request.
+        "state": "A String", # Potential issues with the underlying Pub/Sub subscription configuration. Only populated on get requests.
+        "subscription": "A String", # Output only. Name of the subscription. Format is `projects/{project}/subscriptions/{subscription}`.
+        "topic": "A String", # The name of the topic from which this subscription is receiving messages. Format is `projects/{project}/topics/{topic}`.
+      },
       "substitutions": { # Substitutions for Build resource. The keys must match the following regular expression: `^_[A-Z0-9_]+$`.
         "a_key": "A String",
       },
@@ -1468,6 +1496,7 @@
   "description": "A String", # Human-readable description of this trigger.
   "disabled": True or False, # If true, the trigger will never automatically execute a build.
   "filename": "A String", # Path, from the source root, to the build configuration file (i.e. cloudbuild.yaml).
+  "filter": "A String", # Optional. A Common Expression Language string.
   "github": { # GitHubEventsConfig describes the configuration of a trigger that creates a build whenever a GitHub event is received. This message is experimental. # GitHubEventsConfig describes the configuration of a trigger that creates a build whenever a GitHub event is received. Mutually exclusive with `trigger_template`.
     "installationId": "A String", # The installationID that emits the GitHub event.
     "name": "A String", # Name of the repository. For example: The name for https://github.com/googlecloudplatform/cloud-builders is "cloud-builders".
@@ -1491,6 +1520,12 @@
     "A String",
   ],
   "name": "A String", # User-assigned name of the trigger. Must be unique within the project. Trigger names must meet the following requirements: + They must contain only alphanumeric characters and dashes. + They can be 1-64 characters long. + They must begin and end with an alphanumeric character.
+  "pubsubConfig": { # PubsubConfig describes the configuration of a trigger that creates a build whenever a Pub/Sub message is published. # Optional. PubsubConfig describes the configuration of a trigger that creates a build whenever a Pub/Sub message is published.
+    "serviceAccountEmail": "A String", # Service account that will make the push request.
+    "state": "A String", # Potential issues with the underlying Pub/Sub subscription configuration. Only populated on get requests.
+    "subscription": "A String", # Output only. Name of the subscription. Format is `projects/{project}/subscriptions/{subscription}`.
+    "topic": "A String", # The name of the topic from which this subscription is receiving messages. Format is `projects/{project}/topics/{topic}`.
+  },
   "substitutions": { # Substitutions for Build resource. The keys must match the following regular expression: `^_[A-Z0-9_]+$`.
     "a_key": "A String",
   },
@@ -1737,6 +1772,7 @@
   "description": "A String", # Human-readable description of this trigger.
   "disabled": True or False, # If true, the trigger will never automatically execute a build.
   "filename": "A String", # Path, from the source root, to the build configuration file (i.e. cloudbuild.yaml).
+  "filter": "A String", # Optional. A Common Expression Language string.
   "github": { # GitHubEventsConfig describes the configuration of a trigger that creates a build whenever a GitHub event is received. This message is experimental. # GitHubEventsConfig describes the configuration of a trigger that creates a build whenever a GitHub event is received. Mutually exclusive with `trigger_template`.
     "installationId": "A String", # The installationID that emits the GitHub event.
     "name": "A String", # Name of the repository. For example: The name for https://github.com/googlecloudplatform/cloud-builders is "cloud-builders".
@@ -1760,6 +1796,12 @@
     "A String",
   ],
   "name": "A String", # User-assigned name of the trigger. Must be unique within the project. Trigger names must meet the following requirements: + They must contain only alphanumeric characters and dashes. + They can be 1-64 characters long. + They must begin and end with an alphanumeric character.
+  "pubsubConfig": { # PubsubConfig describes the configuration of a trigger that creates a build whenever a Pub/Sub message is published. # Optional. PubsubConfig describes the configuration of a trigger that creates a build whenever a Pub/Sub message is published.
+    "serviceAccountEmail": "A String", # Service account that will make the push request.
+    "state": "A String", # Potential issues with the underlying Pub/Sub subscription configuration. Only populated on get requests.
+    "subscription": "A String", # Output only. Name of the subscription. Format is `projects/{project}/subscriptions/{subscription}`.
+    "topic": "A String", # The name of the topic from which this subscription is receiving messages. Format is `projects/{project}/topics/{topic}`.
+  },
   "substitutions": { # Substitutions for Build resource. The keys must match the following regular expression: `^_[A-Z0-9_]+$`.
     "a_key": "A String",
   },