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#5163

Changes:

feat(compute): Switch to string enums for compute (#685)
  Also introduce gapic_yaml for java clients to override default LRO configuration (which has too way too long timeouts).

  Also cleanup regenerate other files (grpc_service_config and service yaml)
  Source-Link: googleapis/googleapis@8ce4ea6

docs(cloudtasks): fix docstring formatting
  Committer: @parthea
  PiperOrigin-RevId: 410919520
  Source-Link: googleapis/googleapis@b5274f7

build(spanner/admin/database): add published name under submodules
  PiperOrigin-RevId: 410900101
  Source-Link: googleapis/googleapis@c246c88

chore(vmmigration): Prepare vmmigration  v1 BUILD.bazel for release
  PiperOrigin-RevId: 410873197
  Source-Link: googleapis/googleapis@6e8a083

chore: update disco-to-proto3-converter
  PiperOrigin-RevId: 410851030
  Source-Link: googleapis/googleapis@49c40d2