Enables frozen string for the following:

* lib/gitlab/fogbugz_import/**/*.rb
* lib/gitlab/gfm/**/*.rb
* lib/gitlab/git/**/*.rb
* lib/gitlab/gitaly_client/**/*.rb
* lib/gitlab/gitlab_import/**/*.rb
* lib/gitlab/google_code_import/**/*.rb
* lib/gitlab/gpg/**/*.rb
* lib/gitlab/grape_logging/**/*.rb
* lib/gitlab/graphql/**/*.rb
* lib/gitlab/graphs/**/*.rb
* lib/gitlab/hashed_storage/**/*.rb
* lib/gitlab/health_checks/**/*.rb

Partially address gitlab-org/gitlab-ce#47424.

Merge branch '53812-review-apps-check-whether-release-exists-before-attempting-stop_review' into 'master'

Ensure we abort the cleanup if release is empty

Closes #53812

See merge request gitlab-org/gitlab-ce!22992

Border radius fixes for redesigned discussions

Closes #53880 and #53767

See merge request gitlab-org/gitlab-ce!23006

Updates ci header component with gitlab-ui

See merge request gitlab-org/gitlab-ce!23000

Signed-off-by: Rémy Coutable <remy@rymai.me>

Update URL for the grafana instance of sitespeed

See merge request gitlab-org/gitlab-ce!23001

Update docs to put prepend as the last line

Closes #53919

See merge request gitlab-org/gitlab-ce!23017

Add documentation about frontend test categories to frontend guide

See merge request gitlab-org/gitlab-ce!21344

Document new report types

See merge request gitlab-org/gitlab-ce!22828

Update merge request page object and selectors

See merge request gitlab-org/gitlab-ce!22939

Update eks guide to include admin token creation.

See merge request gitlab-org/gitlab-ce!22926

Refactor reference regexes and identity scopes

See merge request gitlab-org/gitlab-ce!22987

It reuses loading button instead of creating a new loading button
It uses the new gitlab-ui components

Resolve Markdown ordered lists not conforming to styleguide

See merge request gitlab-org/gitlab-ce!23007

Add documentation for archive builds

Closes #53534

See merge request gitlab-org/gitlab-ce!22909

Show HTTP response code for Kubernetes errors

Closes #53628

See merge request gitlab-org/gitlab-ce!22964

This updates the documentation for adding EE specific features to
clarify that `prepend` should be on the last line, and how to deal with
code that depends on class methods redefined in EE.

Fixes https://gitlab.com/gitlab-org/gitlab-ce/issues/53919

Upgrade to node v10.x and yarn 1.12.x

See merge request gitlab-org/gitlab-ce!22979

remove .mr-version-controls from .fixed-with-container

See merge request gitlab-org/gitlab-ce!23003

Defines Vue.js Expert Role

See merge request gitlab-org/gitlab-ce!21922

update the part to Google+ API

See merge request gitlab-org/gitlab-ce!23014

Fix deployment jobs using nil token

Closes #53879

See merge request gitlab-org/gitlab-ce!23009

Fix help text in Admin Area > Background Jobs

See merge request gitlab-org/gitlab-ce!19208

Remove obsolete gitlab_shell checks

See merge request gitlab-org/gitlab-ce!22417

Adds back missing CI favicon

Closes #53888

See merge request gitlab-org/gitlab-ce!23002

Update haml_lint to 0.28.0

Closes #53289

See merge request gitlab-org/gitlab-ce!22660

Update ffaker to 2.10.0

Closes #53291

See merge request gitlab-org/gitlab-ce!22661

Relocate JSONWebToken::HMACToken from EE

See merge request gitlab-org/gitlab-ce!22906

Resolve "Docs update - adding project txt to match up with image"

Closes #53894

See merge request gitlab-org/gitlab-ce!23008