Add styles for shorter code

See merge request !13612

Move ConvDev Index location to after Cohorts

Closes #34413

See merge request !13398

Update rubocop-gitlab-security to 0.1.0

See merge request !13879

Update and fix resolvable note icons for easier recognition

Closes #36582

See merge request !13821

Update templates to include header in the README

Closes #36904

See merge request !13785

[ci skip]

Fix a transient failure in mini_pipeline_graph_spec

Closes #34323

See merge request !13844

Add filtered search to group merge requests dashboard

Closes #36703

See merge request !13688

Add spec for deleting protected tags

See merge request !13693

Fix events error importing GitLab projects

Closes #36965

See merge request !13868

This spec failed reliably with a specific run order (see issue), the
reasons for which are still unknown. This simplification resolves the
failure.

Closes https://gitlab.com/gitlab-org/gitlab-ce/issues/34323

Improve flaky ACE editor spec

See merge request !13854

fix transient dropdown test failures

Closes #37052 and #34436

See merge request !13862

Instrument MergeRequest#ensure_ref_fetched

See merge request !13876

Reenable MySQL tests on all CE and EE branches part 2

Closes #36384

See merge request !13840

Don't wait for project authorization sidekiq jobs when creating projects

Closes #36792

See merge request !13775

Combine multiple expectations into one for shared system note example

See merge request !13814

Clear schema cache after running tests for migrations

Closes #37086

See merge request !13870

Remove skipped examples in filtered issues feature spec

See merge request !13845

Make sure we have an owner for triggers

Closes #35642

See merge request !13799

Simplify system hook testing and guarantee test will fire

Closes #37067

See merge request !13858

Bugfix.notify custom participants

Closes #36610

See merge request !13680

Update 'Using Docker images' documentation

Closes gitlab-ci-multi-runner#2696

See merge request !13848

Rename CI/CD related Sidekiq queues

Closes #35532

See merge request !13714

Remove 'dependent: :destroy' from ProtectedRef has_many :"#{type}_access_levels"

See merge request !13835

* upstream/master: (49 commits)
  Fire system hooks when a user is created via LDAP or OAuth
  Common Docker Documentation Location in `gitlab-ce`
  fix deprecation warning present during webpack compiles
  Enable 5 lines of Sidekiq backtrace lines to aid in debugging
  Add support for copying permalink to notes via more actions dropdown
  Docs: update - fix headers
  Handle creating a nested group on MySQL correctly
  Decrease statuses batch size even more in a migration
  Fix failure when issue author is nil
  Fix searching for files by path
  Fix invite by email address duplication
  Revert "Merge branch 'mk-reenable-mysql-tests-on-all-branches' into 'master'"
  Fix repo editor scrollbar
  Revert "Merge branch 'sh-sidekiq-backtrace' into 'master'"
  Replace 'source/search_code.feature' spinach test with an rspec analog
  Add missing third argument to `Git::Repository#initialize` in spec
  New doc: how to install GitLab on Azure
  Authorizations regarding OAuth - style confirmation
  Enable 5 lines of Sidekiq backtrace lines to aid in debugging
  Reenable MySQL tests on all branches
  ...