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#4695

Changes:

feat(kms): add support for Key Reimport
  PiperOrigin-RevId: 393749648
  Source-Link: googleapis/googleapis@e3d9b11

chore: regenerate API index

  Source-Link: googleapis/googleapis@577814e

feat(osconfig): Update osconfig v1 and v1alpha with WindowsApplication
  Committer: @coodie
  PiperOrigin-RevId: 393730900
  Source-Link: googleapis/googleapis@69fe13f

fix(datastream): Change a few resource pattern variables from camelCase to snake_case
  PiperOrigin-RevId: 393705818
  Source-Link: googleapis/googleapis@9e99074

chore: regenerate API index

  Source-Link: googleapis/googleapis@ce55001

feat(translate): added v3 proto for online/batch document translation and updated v3beta1 proto for format conversion
  PiperOrigin-RevId: 393656336
  Source-Link: googleapis/googleapis@17d3fb2