* upstream/master: (54 commits)
  Add 1px to breadcrumbs min height
  Merge branch 'fix-re2-infinite-loop-nick' into 'security-9-3'
  Copy-edit background migrations guidelines
  Add Traditional Chinese in Taiwan translations of Pipeline Schedules
  Fix new project selectors in GitLab QA
  add screenshots
  review troll powerup doc
  Improve version handling on component install tasks
  Add disclaimer about API scope
  Migrate Gitlab::Git::Commit.find_all to Gitaly
  Refactor filtered search dropdown parameters
  Spread used props
  Update CHANGELOG.md for 9.0.12
  Update CHANGELOG.md for 9.1.9
  Update CHANGELOG.md for 9.2.9
  Move a spec related to merge requests out of a feature related to issues
  Update CHANGELOG.md for 9.3.9
  Incorporate CommitService.GetTreeEntries Gitaly call
  Extract "@request.env['devise.mapping'] = Devise.mappings[:user]" to a test helper
  Bump Gitlab-Shell to 5.4.0
  ...