chore(all): auto-regenerate .pb.go files (#761)

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#5663

Changes:

feat(orgpolicy): Deprecates AlternativePolicySpec
  PiperOrigin-RevId: 428897918
  Source-Link: googleapis/googleapis@bbb3c1f

chore: regenerate API index

  Source-Link: googleapis/googleapis@3f75ee1

fix!: remove showcase protos (#702)

  Source-Link: googleapis/googleapis@665a4f0

chore(bazel): update gapic-generator-php v1.4.4
  Changes include:
  - protect against diregapic enum using reserved words
  - updated packaged version of composer and php for bazel

  PiperOrigin-RevId: 428886122
  Source-Link: googleapis/googleapis@9f7048a

fix(ruby)!: Remove the obsolete v1beta1 version from the Ruby google-cloud-video-transcoder client's dependencies
  PiperOrigin-RevId: 428881386
  Source-Link: googleapis/googleapis@d3659fc

Synchronize new proto/yaml changes.
  PiperOrigin-RevId: 428863885
  Source-Link: googleapis/googleapis@86978fd

Synchronize new proto/yaml changes.
  PiperOrigin-RevId: 428863285
  Source-Link: googleapis/googleapis@298784c

Synchronize new proto/yaml changes.
  PiperOrigin-RevId: 428861556
  Source-Link: googleapis/googleapis@4b022d9

Synchronize new proto/yaml changes.
  PiperOrigin-RevId: 428857389
  Source-Link: googleapis/googleapis@fccbb78

Synchronize new proto/yaml changes.
  PiperOrigin-RevId: 428856882
  Source-Link: googleapis/googleapis@1ce14f5

Synchronize new proto/yaml changes.
  PiperOrigin-RevId: 428856087
  Source-Link: googleapis/googleapis@a618f00

Synchronize new proto/yaml changes.
  PiperOrigin-RevId: 428853987
  Source-Link: googleapis/googleapis@08a6f94

Synchronize new proto/yaml changes.
  PiperOrigin-RevId: 428853672
  Source-Link: googleapis/googleapis@58fbca6

Synchronize new proto/yaml changes.
  PiperOrigin-RevId: 428853083
  Source-Link: googleapis/googleapis@8c50f1d

fix(channel): clarify language
  PiperOrigin-RevId: 428802866
  Source-Link: googleapis/googleapis@8cb4699

build: library of v1beta3 showcase onboarded to SAM
  PiperOrigin-RevId: 428800970
  Source-Link: googleapis/googleapis@b4792ab

feat(documentai): add `symbols` field, and auto-format comments
  PiperOrigin-RevId: 428800506
  Source-Link: googleapis/googleapis@ea20380

build: library of v1 showcase onboarded to SAM
  PiperOrigin-RevId: 428800466
  Source-Link: googleapis/googleapis@c23aef2

build: library of v1beta1 showcase onboarded to SAM
  PiperOrigin-RevId: 428800060
  Source-Link: googleapis/googleapis@0eb4364

feat(documentai): add `symbols` field, and auto-format comments
  PiperOrigin-RevId: 428799963
  Source-Link: googleapis/googleapis@8b6181f

chore: regenerate API index

  Source-Link: googleapis/googleapis@36a7e1d

build: library of v1 showcase onboarded to SAM
  PiperOrigin-RevId: 428796832
  Source-Link: googleapis/googleapis@ea51465

chore: regenerate API index

  Source-Link: googleapis/googleapis@4f919d1

build: library of v1beta2 showcase onboarded to SAM
  PiperOrigin-RevId: 428795809
  Source-Link: googleapis/googleapis@59f9a97

build: library of v1beta3 showcase onboarded to SAM
  PiperOrigin-RevId: 428795767
  Source-Link: googleapis/googleapis@1673d57

build: library of v1beta1 showcase onboarded to SAM
  PiperOrigin-RevId: 428795675
  Source-Link: googleapis/googleapis@79bec21

chore: regenerate API index

  Source-Link: googleapis/googleapis@e8fea5a

feat: add WarmAndPing request for channel priming
  PiperOrigin-RevId: 428795660
  Source-Link: googleapis/googleapis@6cce671

regen.txt

@@ -1 +1 @@
-82cc6da27afba5bf1e0bb415634f1342e6a4ec9f
+bbb3c1f3baeab22cda73f3c2e86a088db5a747e6