feat: update googleapis and regenerate

[zhumin8]

update source and re-generate. Commands used:

V=$(go run github.com/googleapis/librarian/cmd/librarian@latest config get version)
go run github.com/googleapis/librarian/tool/cmd/builddockerimages@${V} --version ${V} --language python
go run github.com/googleapis/librarian/cmd/librarian@${V} update sources.googleapis
 docker run -u $(id -u):$(id -g) -v .:/repo -v ~/.cache:/.cache -w /repo docker.io/library/librarian-python:${V}  generate -v --all

reverted one change (cfd21f9) to be resolved separately, tracked at #17930

[snippet-bot]

Here is the summary of changes.

You are about to add 4 region tags.

• packages/google-cloud-support/samples/generated_samples/cloudsupport_v2_generated_support_event_subscription_service_expunge_support_event_subscription_async.py:26, tag cloudsupport_v2_generated_SupportEventSubscriptionService_ExpungeSupportEventSubscription_async
• packages/google-cloud-support/samples/generated_samples/cloudsupport_v2_generated_support_event_subscription_service_expunge_support_event_subscription_sync.py:26, tag cloudsupport_v2_generated_SupportEventSubscriptionService_ExpungeSupportEventSubscription_sync
• packages/google-cloud-support/samples/generated_samples/cloudsupport_v2beta_generated_support_event_subscription_service_expunge_support_event_subscription_async.py:26, tag cloudsupport_v2beta_generated_SupportEventSubscriptionService_ExpungeSupportEventSubscription_async
• packages/google-cloud-support/samples/generated_samples/cloudsupport_v2beta_generated_support_event_subscription_service_expunge_support_event_subscription_sync.py:26, tag cloudsupport_v2beta_generated_SupportEventSubscriptionService_ExpungeSupportEventSubscription_sync

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[gemini-code-assist]

Code Review

This pull request introduces several updates across Google Cloud Python client libraries. Key changes include adding support for the ExpungeSupportEventSubscription API in both v2 and v2beta versions of the google-cloud-support package, along with corresponding generated samples and unit tests. Additionally, the REST URI paths for support event subscriptions were updated to target organizations/* instead of */*. In the grafeas package, support for CVSS v4 metrics and enums was added to vulnerability notes and occurrences. Other updates include deprecating the client_tls_policy field in google-cloud-network-services and removing the AsyncMetricsInterceptor from google-cloud-spanner transports. There are no review comments, so I have no feedback to provide.