chore(all): auto-regenerate .pb.go files (googleapis#643)

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#4478

Changes:

chore: regenerate API index

  Source-Link: googleapis/googleapis@3859723

feat!: storagetransfer public protos update BREAKING CHANGE: field annotations are added. Allowing this since no client libraries were generated based on old protos.
  Committer: @alexander-fenster
  PiperOrigin-RevId: 386124227
  Source-Link: googleapis/googleapis@2d0aae2

fix: add missing dependency configmanagement.proto, cloudauditlogging.proto, metering.proto, multiclusteringress.proto, servicemesh.proto to v1alpha client
  fix: add missing dependency configmanagement.proto, metering.proto, multiclusteringress.proto to v1beta client

  Committer: @chingor13
  PiperOrigin-RevId: 386025193
  Source-Link: googleapis/googleapis@e8d2996