chore(all): auto-regenerate .pb.go files (googleapis#817)

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.

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Changes:

chore: regenerate API index

  Source-Link: googleapis/googleapis@a2df6aa

feat: Client libraries for the Dataform API
  This is the first release of the Public Dataform API client libraries.

  PiperOrigin-RevId: 451825930
  Source-Link: googleapis/googleapis@34c6901

build(bigquery/dataexchange): include common protos in nodejs_gapic_assembly_pkg
  PiperOrigin-RevId: 451418978
  Source-Link: googleapis/googleapis@1848f08