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

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#4972

Changes:

docs(clouddms): Fix NOT_STARTED state documentation in MigrationJob resource
  PiperOrigin-RevId: 402280922
  Source-Link: googleapis/googleapis@ae3a4a2

feat: publish `routing.proto` containing the `google.api.RoutingRule` annotation feat: add Bazel rules wrapping `routing.proto`
  Committer: @viacheslav-rostovtsev
  PiperOrigin-RevId: 401879979
  Source-Link: googleapis/googleapis@177c62a

docs: recommend AnalyzeContent for future users
  PiperOrigin-RevId: 401877120
  Source-Link: googleapis/googleapis@9af371c

chore: regenerate API index

  Source-Link: googleapis/googleapis@dc9f252

feat(securitycenter): Added vulnerability field to the finding feat: Added type field to the resource which is surfaced in NotificationMessage
  PiperOrigin-RevId: 401787368
  Source-Link: googleapis/googleapis@a7a3440