chore(all): auto-regenerate .pb.go files (googleapis#635)

This is an auto-generated regeneration of the .pb.go files by
cloud.google.com/go/internal/gapicgen. Once this PR is submitted, genbot will
update the corresponding PR to depend on the newer version of go-genproto, and
assign reviewers. Whilst this or any regen PR is open in go-genproto, genbot
will not create any more regeneration PRs. If all regen PRs are closed,
gapicgen will create a new set of regeneration PRs once per night.

If you have been assigned to review this PR, please:

- Ensure that CI is passing. If it's failing, it requires your manual attention.
- Approve and submit this PR if you believe it's ready to ship. That will prompt
genbot to assign reviewers to the google-cloud-go PR.


Corresponding google-cloud-go PR: googleapis/google-cloud-go#4415

Changes:

chore: regenerate API index
  
  Source-Link: googleapis/googleapis@db8f3aa

feat: Enables generation of client libraries for C#, php and ruby.
  PiperOrigin-RevId: 383957820
  Source-Link: googleapis/googleapis@2d51c27

feat: add `minute_ranges` field to `RunRealtimeReportRequest` object which can be used to specify the time range (in minutes) for realtime report queries docs: document the increase from 8 to 9 of the number of allowed dimensions in a report query
  PiperOrigin-RevId: 383930639
  Source-Link: googleapis/googleapis@41b50a3

chore: use gapic-generator-python 0.50.4
  PiperOrigin-RevId: 383929493
  Source-Link: googleapis/googleapis@dd1ef28

feat(datastore/admin): Publish message definitions for new Cloud Datastore migration logging steps.
  PiperOrigin-RevId: 383927106
  Source-Link: googleapis/googleapis@e96a2e6

feat(secretmanager): Tune Secret Manager auto retry parameters
  UNKNOWN removed from retryable errors per AIP-194. Added RESOURCE_EXHAUSTED with adjusted parameters for better performance with spikes of AccessSecretVersion requests at or near quota limits.
  
  PiperOrigin-RevId: 383886699
  Source-Link: googleapis/googleapis@1eade81

feat(container): allow updating security group on existing clusters
  PiperOrigin-RevId: 383869440
  Source-Link: googleapis/googleapis@e2b7a98

Remove Artman from README (googleapis#666)
  Artman has been deprecated, artman's repo archived, mentioning artman in the readme is strictly harmful, as it runs monolith generator only, which this repository is not compatible with anymore.
  Source-Link: googleapis/googleapis@b2a7d27

chore(ruby): Switch Bazel jobs to use the Ruby gapic-generator 0.9.1
  PiperOrigin-RevId: 383721241
  Source-Link: googleapis/googleapis@54dc383

chore: regenerate API index
  
  Source-Link: googleapis/googleapis@449686b

feat: Initial commit for the Transcoder V1 client libraries.
  PiperOrigin-RevId: 383681557
  Source-Link: googleapis/googleapis@509489a