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#6296

Changes:

chore: regenerate API index

  Source-Link: googleapis/googleapis@8d5b1a3

feat(container): add support to modify kubelet pod pid limit in node system configuration feat: support spot VM feat: support Tier 1 bandwidth feat: update support for node pool labels, taints and network tags feat: add Binauthz Evaluation mode support to GKE Classic feat: add GKE Identity Service feat: add network tags to autopilot cluster feat: support enabling Confidential Nodes in the node pool feat: support node pool blue-green upgrade feat: add Location Policy API feat: support GPU timesharing feat: add managed prometheus feature
  PiperOrigin-RevId: 458323987
  Source-Link: googleapis/googleapis@c51f2ed

chore: regenerate API index

  Source-Link: googleapis/googleapis@7cfa071

feat: add cgroup mode to node system config feat: add support to modify kubelet pod pid limit in node system configuration feat: support Tier 1 bandwidth feat: support IPV6 Dual Stack (stack_type) feat: add Binauthz Evaluation mode support to GKE Classic feat: support GKE Cost Allocations feat: add network tags to autopilot cluster feat: add protect config audit api feat: support enabling Confidential Nodes in the node pool feat: support node pool blue-green upgrade feat: add Location Policy API feat: support GPU timesharing
  PiperOrigin-RevId: 458322449
  Source-Link: googleapis/googleapis@61ea2e5

docs: minor formatting fixes
  PiperOrigin-RevId: 458309366
  Source-Link: googleapis/googleapis@503fcb1

docs: clarify comment on update_time
  PiperOrigin-RevId: 458304215
  Source-Link: googleapis/googleapis@917762b

feat(assuredworkloads): ITAR June Preview Launch
  Committer: @Guisin
  PiperOrigin-RevId: 458302463
  Source-Link: googleapis/googleapis@523fdaf

build(video/stitcher): correct artifact name for npm
  PiperOrigin-RevId: 458276680
  Source-Link: googleapis/googleapis@1e6c634

fix(gaming): publish v1beta LRO HTTP rules
  PiperOrigin-RevId: 458259504
  Source-Link: googleapis/googleapis@181b856

docs(dialogflow/cx): improve comments for protos
  PiperOrigin-RevId: 458250124
  Source-Link: googleapis/googleapis@913b9bd

fix(security/privateca): publish v1beta1 LRO HTTP rules
  PiperOrigin-RevId: 458248734
  Source-Link: googleapis/googleapis@e63fcd7