chore(all): auto-regenerate gapics (#3719)

This is an auto-generated regeneration of the gapic clients by
cloud.google.com/go/internal/gapicgen. Once the corresponding genproto PR is
submitted, genbot will update this PR with a newer dependency to the newer
version of genproto and assign reviewers to this PR.

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

- Ensure that the version of genproto in go.mod has been updated.
- 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.

Corresponding genproto PR: googleapis/go-genproto#536

Changes:

feat(spanner/admin/database): add CMEK fields to backup and database
  PiperOrigin-RevId: 358725120
  Source-Link: googleapis/googleapis@f829b13

feat(area120/tables): Added ListWorkspaces, GetWorkspace, BatchDeleteRows APIs.
  PiperOrigin-RevId: 358406243
  Source-Link: googleapis/googleapis@151bfba

Author: yoshi-automation