* upstream/master: (99 commits)
  Update CHANGELOG for 8.10.6, 8.9.7, and 8.8.8
  Updated Akismet documentation
  Add hover state to todos (!5361)
  Load issues and merge requests templates from repository
  Backport EE assertions in protected branch related specs.
  Revert "Merge branch '19957-write-tests-for-adding-comments-for-different-line-types-in-diff' into 'master'"
  Fix a missed `before_action` for `AutocompleteController`.
  Backport `AutocompleteController#load_project` from EE!581.
  Fix API::BranchesSpec.
  Fix failing tests relating to backporting ee!581.
  Revert unrelevant changes
  Fix the protected branches factory.
  Improve EE compatibility with protected branch access levels.
  Move the "update" portion of the protected branch view into a partial.
  Don't select an access level if already selected.
  Backport changes from gitlab-org/gitlab-ee!581 to CE.
  Further refactor and syntax fixes.
  Upgrade httpclient gem from 2.7.0.1 to 2.8.2.
  Make rubocop happy
  Make rubocop happy
  ...