chore(all): auto-regenerate .pb.go files (googleapis#622)

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#4275

Changes:

feat: publishing OperationMetadata common proto
  Committer: @alexander-fenster
  PiperOrigin-RevId: 379843367
  Source-Link: googleapis/googleapis@16f3e6f

chore(bazel): update rules_gapic to v0.5.5.
  * stop generating `protoc-gen-docs_plugin` with `py_proto_library`

  PiperOrigin-RevId: 379825239
  Source-Link: googleapis/googleapis@2d5f6e5

chore(analytics/data): Populate Ruby generator configuration for new clients
  PiperOrigin-RevId: 379815863
  Source-Link: googleapis/googleapis@b26f86a

chore(ruby): Use latest microgenerator for Bazel GAPIC generation
  PiperOrigin-RevId: 379810278
  Source-Link: googleapis/googleapis@7e78ffd

chore: release gapic-generator-java v1.0.13
  Committer: @miraleung
  PiperOrigin-RevId: 379784268
  Source-Link: googleapis/googleapis@551681f

chore: regenerate API index

  Source-Link: googleapis/googleapis@f8f0fc2

fix(security/privateca): Fixed casing of the Ruby namespace
  PiperOrigin-RevId: 379779471
  Source-Link: googleapis/googleapis@f176fe6

chore: regenerate API index

  Source-Link: googleapis/googleapis@33b7fbd

feat: Publish public APIs for FleetEngine
  Committer:@eahab-google
  PiperOrigin-RevId: 379742542
  Source-Link: googleapis/googleapis@90220e4

chore: regenerate API index

  Source-Link: googleapis/googleapis@30c4de8

feat(documentai): update document.proto, add the processor management methods.
  PiperOrigin-RevId: 379607978
  Source-Link: googleapis/googleapis@19906f9

fix(kms): replace IAMPolicy mixin in service config.
  PiperOrigin-RevId: 379592845
  Source-Link: googleapis/googleapis@5308b86

chore: regenerate API index

  Source-Link: googleapis/googleapis@438bb44

feat: publishing Testing API protos
  Committer: @alexander-fenster
  PiperOrigin-RevId: 379505638
  Source-Link: googleapis/googleapis@0481138

chore(ruby): Use latest microgenerator for Bazel GAPIC generation
  PiperOrigin-RevId: 379376795
  Source-Link: googleapis/googleapis@cbd13d8

feat(dialogflow): added Automated agent reply type and allow cancellation flag for partial response feature.
  PiperOrigin-RevId: 379370373
  Source-Link: googleapis/googleapis@58187af

docs: update comment in ListSuggestions to use absolute URL for /apis/design/design_patterns
  PiperOrigin-RevId: 379330928
  Source-Link: googleapis/googleapis@6ddf77d

chore: regenerate API index

  Source-Link: googleapis/googleapis@010b301

feat: eventarc public protos
  Committer: @alexander-fenster
  PiperOrigin-RevId: 379317834
  Source-Link: googleapis/googleapis@1b6349f