chore(all): auto-regenerate .pb.go files (googleapis#865)

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
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Corresponding google-cloud-go PR: googleapis/google-cloud-go#6397

Changes:

docs: update comment to refer to to correct_default value for RoutingPreference.ROUTING_PREFERENCE_UNSPECIFIED
  PiperOrigin-RevId: 462451264
  Source-Link: googleapis/googleapis@de1ace4

chore: regenerate API index

  Source-Link: googleapis/googleapis@55f082c

feat: Add "or" query support (only in the preview API surface) docs: Clarify wording around default database_id usage
  PiperOrigin-RevId: 462444231
  Source-Link: googleapis/googleapis@b9cbfce

chore: regenerate API index

  Source-Link: googleapis/googleapis@0d62617

docs(networksecurity): update the comments of various networksecurity resources fix!: fix annotation of parent in Create*Request
  PiperOrigin-RevId: 462271672
  Source-Link: googleapis/googleapis@9213efa

chore: regenerate API index

  Source-Link: googleapis/googleapis@fb78f5b

feat(securitycenter): Added container field to findings attributes feat: Added kubernetes field to findings attribute. This field is populated only when the container is a kubernetes cluster explicitly
  PiperOrigin-RevId: 462248767
  Source-Link: googleapis/googleapis@dd2b0d2

chore(bazel): update Go gapic generator to v0.31.2
  PiperOrigin-RevId: 462206946
  Source-Link: googleapis/googleapis@19cfbec

fix: fixes for routing headers
  Use gapic-generator-typescript v2.15.3.

  Committer: @alexander-fenster
  PiperOrigin-RevId: 462159384
  Source-Link: googleapis/googleapis@ff8159e

chore: regenerate API index

  Source-Link: googleapis/googleapis@6211928

feat(spanner/admin/database): Add ListDatabaseRoles API to support role based access control
  PiperOrigin-RevId: 462086058
  Source-Link: googleapis/googleapis@4f072bf

chore: regenerate API index

  Source-Link: googleapis/googleapis@45e4f30

chore(googleads)!: remove protos for v8, which has sunset
  Committer: @aohren

  BREAKING CHANGE: Removing the entire version 8 of the Google Ads API because it has sunset and is no longer available.

  PiperOrigin-RevId: 462082162
  Source-Link: googleapis/googleapis@d8e37bb