chore(all): auto-regenerate .pb.go files (#615)

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#4236

Changes:

chore: release gapic-generator-php v1.0.0
  Committer: @miraleung
  PiperOrigin-RevId: 378203812
  Source-Link: googleapis/googleapis@3f938c6

chore: fix missing proto deps for ondemandscanning
  Committer: @miraleung
  PiperOrigin-RevId: 378191557
  Source-Link: googleapis/googleapis@6fb63a9

chore: regenerate API index

  Source-Link: googleapis/googleapis@b25ffdd

feat(channel): Add/Update API definitions for Cloud Channel API, including
  * Update descriptions of APIs.
  * Add additional_bindings to HTTP annotations of Customer related APIs (list/create/get/update/delete).
  * Add a new LookupOffer RPC and LookupOfferRequest proto.
  * Add a new enum value LICENSE_CAP_CHANGED to enum EntitlementEvent.Type.

  PiperOrigin-RevId: 378177991
  Source-Link: googleapis/googleapis@97d42c6

chore(bazel): update gapic-generator-go to v0.20.2
  PiperOrigin-RevId: 378175270
  Source-Link: googleapis/googleapis@3b7d5d2

feat(container): support for NodeAutoprovisioning ImageType
  PiperOrigin-RevId: 378163331
  Source-Link: googleapis/googleapis@e610c3b

feat: support for NodeAutoprovisioning ImageType
  PiperOrigin-RevId: 378161015
  Source-Link: googleapis/googleapis@0fa0d76

chore(debugger): Update clouddebugger_v2 BUILD.bazel for python
  PiperOrigin-RevId: 378058740
  Source-Link: googleapis/googleapis@0778b6c

chore: regenerate API index

  Source-Link: googleapis/googleapis@89ea343

feat!(resourcesettings):Publish Cloud ResourceSettings v1 API
  PiperOrigin-RevId: 378057924
  Source-Link: googleapis/googleapis@255c1a8

feat(dialogflow/cx): support sentiment analysis in bot testing
  PiperOrigin-RevId: 377947699
  Source-Link: googleapis/googleapis@90717db

chore: regenerate API index

  Source-Link: googleapis/googleapis@6ccfaf6

chore(lifesciences): Add package/namespace options for C#, Ruby and PHP. This is a breaking change *only* for those languages, and packages for those languages have not been published yet.
  PiperOrigin-RevId: 377946883
  Source-Link: googleapis/googleapis@3be62a5