Also trigger a new pipeline for automation author

What does this MR do and why?

Also trigger a new pipeline for automation author

This is from: gitlab-org/gitlab#361175 (comment 933576363)

Where we likely want to trigger a new pipeline automatically upon approval for merge requests from @gitlab-dependency-update-bot

Expected impact & dry-runs

We won't need to remember to trigger a new pipeline from @gitlab-dependency-update-bot. Same for @gitlab-release-tools-bot

Action items

• (If applicable) Add documentation to the handbook pages for Triage Operations =>
• (If applicable) Identify the affected groups and how to communicate to them:
  • /cc @person_or_group =>
  • Relevant Slack channels =>
  • Engineering week-in-review

See gitlab-org/gitlab#361175 (comment 933576363)