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#4499

Changes:

chore: Update storagetransfer v1 BUILD.bazel for python
  PiperOrigin-RevId: 386898316
  Source-Link: googleapis/googleapis@28ccba2

chore: regenerate API index

  Source-Link: googleapis/googleapis@3c7864b

chore: publish cloud network services v1beta1
  PiperOrigin-RevId: 386897405
  Source-Link: googleapis/googleapis@c8fac9a

chore: regenerate API index

  Source-Link: googleapis/googleapis@6cf3b8e

feat!(asset): *Change metadata field for the AnalyzeIamPolicyLongrunning. feat: Add AnalyzeMove API. feat: Add read_mask field for SearchAllResourcesRequest feat：Add VersionedResource/AttachedResource fields for ResourceSearchResult.
  *the metadata field change for AnalyzeIamPolicyLongrunning is BACKWARD INCOMPATIBLE. Adding this change expand our ability to return richer metadata information for the longrunning operation. Due to the small usage of this API, we've contacted all the customers to make sure they are not using the metadata field and hence won't be broken by this change.

  Committer: @aaronlichen-hp
  PiperOrigin-RevId: 386530026
  Source-Link: googleapis/googleapis@746461e

fix: enable self signed jwt for grpc chore: use gapic-generator-python 0.50.5
  PiperOrigin-RevId: 386504689
  Source-Link: googleapis/googleapis@762094a

feat!: update CCAI Insights protos. BREAKING_CHANGE: change nesting of Conversation.Transcript.Participant to ConversationParticipant and remove AnnotationBoundary.time_offset
  PiperOrigin-RevId: 386489535
  Source-Link: googleapis/googleapis@a5eda9f

chore: regenerate API index

  Source-Link: googleapis/googleapis@e9ee226

chore: Remove the On-Demand Scanning API from googleapis
  This API is not intended to be generated publicly, and removing it allows us to also remove an unconventional "root" directory of cloud/

  PiperOrigin-RevId: 386429929
  Source-Link: googleapis/googleapis@b65a2dd

docs: fix typos
  PiperOrigin-RevId: 386417992
  Source-Link: googleapis/googleapis@3744b86