chore: Update discovery artifacts (#1401)

## Discovery Artifact Change Summary:
feat(metastore): update the api https://github.com/googleapis/google-api-python-client/commit/c9632ee831b9c135f3a0c018b3fdfe73d7e698a4
diff --git a/docs/dyn/dataflow_v1b3.projects.locations.flexTemplates.html b/docs/dyn/dataflow_v1b3.projects.locations.flexTemplates.html
index c4eb64f..8b1dc76 100644
--- a/docs/dyn/dataflow_v1b3.projects.locations.flexTemplates.html
+++ b/docs/dyn/dataflow_v1b3.projects.locations.flexTemplates.html
@@ -114,7 +114,6 @@
         "maxWorkers": 42, # The maximum number of Google Compute Engine instances to be made available to your pipeline during execution, from 1 to 1000.
         "network": "A String", # Network to which VMs will be assigned. If empty or unspecified, the service will use the network "default".
         "numWorkers": 42, # The initial number of Google Compute Engine instances for the job.
-        "sdkContainerImage": "A String", # Docker registry location of container image to use for the 'worker harness. Default is the container for the version of the SDK. Note this field is only valid for portable pipelines.
         "serviceAccountEmail": "A String", # The email address of the service account to run the job as.
         "stagingLocation": "A String", # The Cloud Storage path for staging local files. Must be a valid Cloud Storage URL, beginning with `gs://`.
         "subnetwork": "A String", # Subnetwork to which VMs will be assigned, if desired. You can specify a subnetwork using either a complete URL or an abbreviated path. Expected to be of the form "https://www.googleapis.com/compute/v1/projects/HOST_PROJECT_ID/regions/REGION/subnetworks/SUBNETWORK" or "regions/REGION/subnetworks/SUBNETWORK". If the subnetwork is located in a Shared VPC network, you must use the complete URL.
@@ -164,7 +163,6 @@
       "maxWorkers": 42, # The maximum number of Google Compute Engine instances to be made available to your pipeline during execution, from 1 to 1000.
       "network": "A String", # Network to which VMs will be assigned. If empty or unspecified, the service will use the network "default".
       "numWorkers": 42, # The initial number of Google Compute Engine instances for the job.
-      "sdkContainerImage": "A String", # Docker registry location of container image to use for the 'worker harness. Default is the container for the version of the SDK. Note this field is only valid for portable pipelines.
       "serviceAccountEmail": "A String", # The email address of the service account to run the job as.
       "stagingLocation": "A String", # The Cloud Storage path for staging local files. Must be a valid Cloud Storage URL, beginning with `gs://`.
       "subnetwork": "A String", # Subnetwork to which VMs will be assigned, if desired. You can specify a subnetwork using either a complete URL or an abbreviated path. Expected to be of the form "https://www.googleapis.com/compute/v1/projects/HOST_PROJECT_ID/regions/REGION/subnetworks/SUBNETWORK" or "regions/REGION/subnetworks/SUBNETWORK". If the subnetwork is located in a Shared VPC network, you must use the complete URL.
@@ -209,7 +207,7 @@
       "debugOptions": { # Describes any options that have an effect on the debugging of pipelines. # Any debugging options to be supplied to the job.
         "enableHotKeyLogging": True or False, # When true, enables the logging of the literal hot key to the user's Cloud Logging.
       },
-      "experiments": [ # The list of experiments to enable. This field should be used for SDK related experiments and not for service related experiments. The proper field for service related experiments is service_options.
+      "experiments": [ # The list of experiments to enable. This field should be used for SDK related experiments and not for service related experiments. The proper field for service related experiments is service_options. For more details see the rationale at go/user-specified-service-options.
         "A String",
       ],
       "flexResourceSchedulingGoal": "A String", # Which Flexible Resource Scheduling mode to run in.
@@ -221,7 +219,7 @@
       },
       "serviceAccountEmail": "A String", # Identity to run virtual machines as. Defaults to the default account.
       "serviceKmsKeyName": "A String", # If set, contains the Cloud KMS key identifier used to encrypt data at rest, AKA a Customer Managed Encryption Key (CMEK). Format: projects/PROJECT_ID/locations/LOCATION/keyRings/KEY_RING/cryptoKeys/KEY
-      "serviceOptions": [ # The list of service options to enable. This field should be used for service related experiments only. These experiments, when graduating to GA, should be replaced by dedicated fields or become default (i.e. always on).
+      "serviceOptions": [ # The list of service options to enable. This field should be used for service related experiments only. These experiments, when graduating to GA, should be replaced by dedicated fields or become default (i.e. always on). For more details see the rationale at go/user-specified-service-options.
         "A String",
       ],
       "shuffleMode": "A String", # Output only. The shuffle mode used for the job.