chore(all): auto-regenerate .pb.go files (#999)

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#7667

Changes:

feat: Chrome OS Moblab API: add a new build label field to the Build resource proto
  PiperOrigin-RevId: 520792552
  Source-Link: googleapis/googleapis@53d620a

chore: regenerate API index

  Source-Link: googleapis/googleapis@7bed0dd

chore(analytics/admin): update import paths for Go targets to match open source location chore: update go_package in protos to match open source location chore: add explicit release levels to Go gapic targets
  PiperOrigin-RevId: 520705454
  Source-Link: googleapis/googleapis@1cfcea4

feat(aiplatform): add public_endpoint_enabled and publid_endpoint_domain_name to IndexEndpoint feat: add ModelSourceType.MODEL_GARDEN enum to ModelSourceInfo feat: add copy to ModelSourceInfo
  PiperOrigin-RevId: 520696525
  Source-Link: googleapis/googleapis@c14398a

feat(asset): Add client library support for AssetService v1 AnalyzeOrgPolicies API feat: Add client library support for AssetService v1 AnalyzeOrgPolicyGovernedContainers API feat: Add client library support for AssetService v1 AnalyzeOrgPolicyGovernedAssets API
  PiperOrigin-RevId: 520696122
  Source-Link: googleapis/googleapis@fb446a2

feat(aiplatform): add public_endpoint_enabled and publid_endpoint_domain_name to IndexEndpoint feat: add ModelSourceType.MODEL_GARDEN enum to ModelSourceInfo feat: add copy to ModelSourceInfo
  PiperOrigin-RevId: 520696120
  Source-Link: googleapis/googleapis@e941b6a