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#6000

Changes:

docs: modifies the project ID pattern in comment for Workbench environment
  PiperOrigin-RevId: 446581791
  Source-Link: googleapis/googleapis@2402963

fix!: Remove google-cloud-dataproc-v1beta2 from dependencies
  PiperOrigin-RevId: 446507585
  Source-Link: googleapis/googleapis@ad96d24

chore: regenerate API index

  Source-Link: googleapis/googleapis@95ce8b2

fix(recaptchaenterprise)!: rename parent to project in SearchRelatedAccountGroupMembershipsRequest feat: introduced WafSettings
  PiperOrigin-RevId: 446496512
  Source-Link: googleapis/googleapis@63d4fba

chore(eventarc): remove unused imports
  PiperOrigin-RevId: 446472466
  Source-Link: googleapis/googleapis@9911f34