Merge branch 'master' into 5845-extract-ee-environments-files

* master: (79 commits)
  Project Sidebar: Split CI/CD into CI/CD and Operations
  Fix GPM content types for Doorkeeper
  Remove docker pull prefix from registry clipboard feature
  Remove unnecessary section-100 css class from application_row.vue
  Document the 3h timeout for GitLab.com shared Runners
  edit GitLab license info in regards to CC licensing
  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
  Remote table-section from div holding cluster error messages
  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
  Disable greedy mode when matching filename
  Add index on runner_type for ci_runners
  Improve the squash step in the 'Database Changes' MR template
  Update docs describing `fast_spec_helper` best practices
  Display help text below auto devops domain with nip.io domain name (#45561)
  Enable update_(build|pipeline) for maintainers
  ...