[ci skip] Merge branch 'master' into 46381-dropdown-mr-widget

* master: (31 commits)
  Remove docker pull prefix from registry clipboard feature
  Document the 3h timeout for GitLab.com shared Runners
  Fix bug with long strings in issue boards
  Fix setting Gitlab metrics content types
  Add documentation for bulk editing of issues and merge requests
  Remove authentication for readonly endpoints in issues API
  Improve testing best practices guidelines
  Add a unique and not null constraint on the project_features.project_id column
  fix typos Frontend Guide, development_process.md
  Add index on runner_type for ci_runners
  Update docs describing `fast_spec_helper` best practices
  Display help text below auto devops domain with nip.io domain name (#45561)
  Add CHANGELOG
  Does not log failed sign-in attempts when database is in read-only mode
  Simplified priority, performance impact should be severity
  Ref contains oid check done by Gitaly
  code example formatting
  more typos
  typo in `endpoint`
  clarify that the function export should be default
  ...