chore(all): auto-regenerate .pb.go files (#724)

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#5157

Changes:

chore(bazel): update gapic-generator-php to v1.1.1
  Changes include:
  - Full LRO support for DIREAGAPIC APIs
  - Various internal API adjustments
  - Fix for Bazel build on macOS

  PiperOrigin-RevId: 410607104
  Source-Link: googleapis/googleapis@5ab5d75

docs(automl): fix docstring formatting
  Committer: @parthea
  PiperOrigin-RevId: 410565213
  Source-Link: googleapis/googleapis@35b8704

docs: fix docstring formatting
  Committer: @parthea
  PiperOrigin-RevId: 410563827
  Source-Link: googleapis/googleapis@a0173f5

docs(securitycenter): fix docstring formatting
  Committer: @parthea
  PiperOrigin-RevId: 410563372
  Source-Link: googleapis/googleapis@23a388d

chore(bazel): update rules_gapic to v0.11.1
  PiperOrigin-RevId: 410544040
  Source-Link: googleapis/googleapis@0ee233b

chore(bazel): update rules_gapic to v0.11.0
  PiperOrigin-RevId: 410381080
  Source-Link: googleapis/googleapis@55726d6

regen.txt

@@ -1 +1 @@
-62cced0cdc743d4b207a9ee3fec16128557c6c39
+5ab5d751296bd8a64403e649fb49c92996f674b0