message: Add "Update dependencies" label to v1 release PR
diff: @@ -30,7 +30,7 @@ def branch_exists_on_remote(branch_name):
  return run_git('ls-remote', '--heads', ORIGIN, branch_name).strip() != ''
  # Opens a PR from the given branch to the release branch
  -def open_pr(repo, all_commits, short_main_sha, new_branch_name, source_branch, target_branch, conductor, is_v2_to_v1_backport):
  +def open_pr(repo, all_commits, short_main_sha, new_branch_name, source_branch, target_branch, conductor, is_v2_to_v1_backport, labels):
  # Sort the commits into the pull requests that introduced them,
  # and any commits that don't have a pull request
  pull_requests = []
  @@ -89,6 +89,7 @@ def open_pr(repo, all_commits, short_main_sha, new_branch_name, source_branch, t
  # PR checks won't be triggered on PRs created by Actions. Therefore mark the PR as draft so that
  # a maintainer can take the PR out of draft, thereby triggering the PR checks.
  pr = repo.create_pull(title=title, body='\n'.join(body), head=new_branch_name, base=target_branch, draft=True)
  + pr.add_to_labels(*labels)
  print('Created PR #' + str(pr.number))
  # Assign the conductor
  @@ -274,7 +275,8 @@ def main():
  source_branch=args.source_branch,
  target_branch=args.target_branch,
  conductor=args.conductor,
  - is_v2_to_v1_backport=args.perform_v2_to_v1_backport
  + is_v2_to_v1_backport=args.perform_v2_to_v1_backport,
  + labels=['Update dependencies'] if args.perform_v2_to_v1_backport else [],
  )
  if __name__ == '__main__':
  