chore: Update discovery artifacts (#1438)

## Deleted keys were detected in the following stable discovery artifacts:
youtube v3 https://github.com/googleapis/google-api-python-client/commit/ec21dff96d9538ad6c7f9b318eca88178533aa95

## Deleted keys were detected in the following pre-stable discovery artifacts:
firebasehosting v1beta1 https://github.com/googleapis/google-api-python-client/commit/c83ac386b65f82e7ba29851d56b496b09a29cf98

## Discovery Artifact Change Summary:
feat(analyticsadmin): update the api https://github.com/googleapis/google-api-python-client/commit/96675a8d9158ec13353fe241f858201fc51b784d
feat(composer): update the api https://github.com/googleapis/google-api-python-client/commit/add2fbdc3afb6696537eb087bc1d79df9194a37a
feat(container): update the api https://github.com/googleapis/google-api-python-client/commit/f8fae98db6d1943411b1a6c0f5a65dea336569f6
feat(content): update the api https://github.com/googleapis/google-api-python-client/commit/0814e009a4a11800db5b4afd7b6260e504c98047
feat(datacatalog): update the api https://github.com/googleapis/google-api-python-client/commit/99706059e58bb3d616253a1af2cd162b5a0b0279
feat(dataflow): update the api https://github.com/googleapis/google-api-python-client/commit/d5f09ef30392532bcfdd82901148bdd3ac6eec01
feat(docs): update the api https://github.com/googleapis/google-api-python-client/commit/dc66f4cafba86baff6149b2f6e59ae1888006911
feat(file): update the api https://github.com/googleapis/google-api-python-client/commit/523fc5c900f53489d56400deb650f6586c9681a0
feat(firebasehosting): update the api https://github.com/googleapis/google-api-python-client/commit/c83ac386b65f82e7ba29851d56b496b09a29cf98
feat(healthcare): update the api https://github.com/googleapis/google-api-python-client/commit/a407471b14349b8c08018196041568f2a35f8d4f
feat(ideahub): update the api https://github.com/googleapis/google-api-python-client/commit/c6b0d83940f238b1330896240492e8db397dcd15
fix(keep): update the api https://github.com/googleapis/google-api-python-client/commit/08fee732e96d3220e624c8fca7b8a9b0c0bcb146
feat(managedidentities): update the api https://github.com/googleapis/google-api-python-client/commit/863b333da7848029fd1614fd48b46cfbe12afcd5
feat(memcache): update the api https://github.com/googleapis/google-api-python-client/commit/17dc001e4649f54944066ce153e3c552c850a146
feat(metastore): update the api https://github.com/googleapis/google-api-python-client/commit/f3a76c9359babc48cc0b76ce7e3be0711ba028ae
feat(slides): update the api https://github.com/googleapis/google-api-python-client/commit/314d61b9ef8c5c30f9756462504dc0df92284cb2
feat(sqladmin): update the api https://github.com/googleapis/google-api-python-client/commit/62784e0b1b5752b480afe1ddd77dcf412bb35dbb
feat(tpu): update the api https://github.com/googleapis/google-api-python-client/commit/16bf712cca4a393d96e4135de3d02e5005051b6d
feat(youtube): update the api https://github.com/googleapis/google-api-python-client/commit/ec21dff96d9538ad6c7f9b318eca88178533aa95
diff --git a/docs/dyn/dataflow_v1b3.projects.locations.flexTemplates.html b/docs/dyn/dataflow_v1b3.projects.locations.flexTemplates.html
index c4eb64f..eb6293c 100644
--- a/docs/dyn/dataflow_v1b3.projects.locations.flexTemplates.html
+++ b/docs/dyn/dataflow_v1b3.projects.locations.flexTemplates.html
@@ -106,11 +106,13 @@
         "additionalUserLabels": { # Additional user labels to be specified for the job. Keys and values must follow the restrictions specified in the [labeling restrictions](https://cloud.google.com/compute/docs/labeling-resources#restrictions) page. An object containing a list of "key": value pairs. Example: { "name": "wrench", "mass": "1kg", "count": "3" }.
           "a_key": "A String",
         },
+        "diskSizeGb": 42, # Worker disk size, in gigabytes.
         "enableStreamingEngine": True or False, # Whether to enable Streaming Engine for the job.
         "flexrsGoal": "A String", # Set FlexRS goal for the job. https://cloud.google.com/dataflow/docs/guides/flexrs
         "ipConfiguration": "A String", # Configuration for VM IPs.
         "kmsKeyName": "A String", # Name for the Cloud KMS key for the job. Key format is: projects//locations//keyRings//cryptoKeys/
         "machineType": "A String", # The machine type to use for the job. Defaults to the value from the template if not specified.
+        "maxNumWorkers": 42, # The maximum number of workers to cap scaling at.
         "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.
@@ -156,11 +158,13 @@
       "additionalUserLabels": { # Additional user labels to be specified for the job. Keys and values must follow the restrictions specified in the [labeling restrictions](https://cloud.google.com/compute/docs/labeling-resources#restrictions) page. An object containing a list of "key": value pairs. Example: { "name": "wrench", "mass": "1kg", "count": "3" }.
         "a_key": "A String",
       },
+      "diskSizeGb": 42, # Worker disk size, in gigabytes.
       "enableStreamingEngine": True or False, # Whether to enable Streaming Engine for the job.
       "flexrsGoal": "A String", # Set FlexRS goal for the job. https://cloud.google.com/dataflow/docs/guides/flexrs
       "ipConfiguration": "A String", # Configuration for VM IPs.
       "kmsKeyName": "A String", # Name for the Cloud KMS key for the job. Key format is: projects//locations//keyRings//cryptoKeys/
       "machineType": "A String", # The machine type to use for the job. Defaults to the value from the template if not specified.
+      "maxNumWorkers": 42, # The maximum number of workers to cap scaling at.
       "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.