chore(all): auto-regenerate gapics (#6161)

This is an auto-generated regeneration of the gapic clients by
cloud.google.com/go/internal/gapicgen. Once the corresponding genproto PR is
submitted, genbot will update this PR with a newer dependency to the newer
version of genproto and assign reviewers to this PR.

If you have been assigned to review this PR, please:

- Ensure that the version of genproto in go.mod has been updated.
- 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.

Corresponding genproto PR: googleapis/go-genproto#825

Changes:

feat(dialogflow/cx): added webhook_config
  The webhook_config field was added to the Environment resource to support environment-level webhook overrides as a preview feature.

  Support for the Google Cloud Locations API has also been added.

  PiperOrigin-RevId: 454733966
  Source-Link: googleapis/googleapis@d5d0f8d

feat(dialogflow/cx): added webhook_config
  The webhook_config field was added to the Environment resource to support environment-level webhook overrides as a preview feature.

  Support for the Google Cloud Locations API has also been added.

  PiperOrigin-RevId: 454731805
  Source-Link: googleapis/googleapis@585fa8c

feat(aiplatform): Include the location and iam_policy mixin clients
  PiperOrigin-RevId: 454727396
  Source-Link: googleapis/googleapis@8105c58

feat(assuredworkloads): Removed _v1beta1 suffix from proto file names BREAKING CHANGE: proto file name is changed from assuredworkloads_v1beta1.proto to assuredworkloads.proto
  PiperOrigin-RevId: 454705538
  Source-Link: googleapis/googleapis@cf681da

feat(analytics/admin): Add Java REST transport to analytics, servicecontrol, servicemanagement, serviceusage and langauge APIs
  PiperOrigin-RevId: 454254635
  Source-Link: googleapis/googleapis@84fb822

chore(apigateway): include generated samples dir
  PiperOrigin-RevId: 454047209
  Source-Link: googleapis/googleapis@d42026b

feat(video/stitcher): add asset_id and stream_id fields to VodSession and LiveSession responses fix: remove COMPLETE_POD stitching option
  PiperOrigin-RevId: 454023909
  Source-Link: googleapis/googleapis@f296ef5

feat(bigquery/migration): Add SQL Server dialect to bigquerymigration v2 client library
  PiperOrigin-RevId: 453984088
  Source-Link: googleapis/googleapis@f30516e

feat(aiplatform): add successful_forecast_point_count to CompletionStats in aiplatform v1 completion_stats.proto feat: add neighbors to Explanation in aiplatform v1 explanation.proto feat: add examples_override to ExplanationSpecOverride in aiplatform v1 explanation.proto feat: add version_id, version_aliases, version_create_time, version_update_time, and version_description to aiplatform v1 model.proto feat: add ModelVersion CRUD methods in aiplatform v1 model_service.proto feat: add model_id and parent_model to TrainingPipeline in aiplatform v1 training_pipeline.proto
  PiperOrigin-RevId: 453734478
  Source-Link: googleapis/googleapis@84720fb

feat(aiplatform): add env to ContainerSpec in aiplatform v1beta1 custom_job.proto
  PiperOrigin-RevId: 453732998
  Source-Link: googleapis/googleapis@a95a55f

feat(firestore): expose read_time fields in Firestore PartitionQuery and ListCollectionIds, currently only available in private preview
  PiperOrigin-RevId: 453719952
  Source-Link: googleapis/googleapis@bdea286