[master] Fix syntax highlight taking too long

Closes #2697

See merge request gitlab/gitlabhq!2467

[master] Fix XSS on Issue details page.

See merge request gitlab/gitlabhq!2468

[master] Fix XSS vulnerability sourced from package.json's homepage

Closes #2702

See merge request gitlab/gitlabhq!2496

[master] CE: Project group approvers leaks private group info

See merge request gitlab/gitlabhq!2488

[master] Stored XSS in Gitlab Merge Request from imported repository

See merge request gitlab/gitlabhq!2492

[master] - Do not persist errors from Kubernetes calls

See merge request gitlab/gitlabhq!2506

[master] Redact events shown in the events API

See merge request gitlab/gitlabhq!2514

[ci skip]

[ci skip]

[ci skip]

ci docs: clarify allow_failure default

See merge request gitlab-org/gitlab-ce!21791

Rename squash before merge vue component

See merge request gitlab-org/gitlab-ce!21851

Add documentation for stable URLs for Artifacts

See merge request gitlab-org/gitlab-ce!21890

Docs: one-off typo fix

See merge request gitlab-org/gitlab-ce!21872

[CE backport] Fix RequestStore-related EE-only test failure

See merge request gitlab-org/gitlab-ce!21915

uploads.md: Fix incorrect path reference

See merge request gitlab-org/gitlab-ce!21901

Enable even more frozen string in app/controllers

See merge request gitlab-org/gitlab-ce!21919

Docs: Update deploy token example to use https

See merge request gitlab-org/gitlab-ce!21720

docs: link to repo check failures

See merge request gitlab-org/gitlab-ce!21829

Preserve order of project tags list

Closes #51839

See merge request gitlab-org/gitlab-ce!21897

Correct GitLab capitalization in CE Translation files

See merge request gitlab-org/gitlab-ce!21832

Resolve "Commit details are not displayed when reviewing an MR commit by commit"

See merge request gitlab-org/gitlab-ce!21784

Added cpp documentation for junit integration.

See merge request gitlab-org/gitlab-ce!21916

Work around a bug in Rails 5, where LIMIT causes trouble

Closes #51729

See merge request gitlab-org/gitlab-ce!21879

fix board list vertical scroll bar always shows up

See merge request gitlab-org/gitlab-ce!20481

Enables frozen string for some vestigial files as
well as the following:

* app/controllers/projects/**/*.rb
* app/controllers/sherlock/**/*.rb
* app/controllers/snippets/**/*.rb
* app/controllers/users/**/*.rb

Partially addresses #47424.

Add link component from gitlab-ui

See merge request gitlab-org/gitlab-ce!21803

Dedupe frontend dependencies

See merge request gitlab-org/gitlab-ce!21908

The test was failing
https://gitlab.com/gitlab-org/gitlab-ee/-/jobs/101444126 because
https://gitlab.com/gitlab-org/gitlab-ee/blob/a04056efad6639420b469eced5130751a8cf2757/ee/spec/support/request_store.rb
which is in EE only, clears the RequestStore before every test,
regardless of whether RequestStore is active. This test is unusual
because it sets up RequestStore without it being active, to make sure
that the tested code doesn’t attempt to use RequestStore. These two
unusual facts combined to cause the failure in EE only. The fix works
because of the particular order of RSpec hooks in the test lifecycle.

Add gitlab-ui skeleton loading

See merge request gitlab-org/gitlab-ce!21871

Update doc/user/project/repository/index.md

See merge request gitlab-org/gitlab-ce!21898

Troubleshoot "Transient failure in qa/specs/features/project/fork_project_spec.rb"

See merge request gitlab-org/gitlab-ce!21858

Enable more frozen string in app/controllers/

See merge request gitlab-org/gitlab-ce!21873

CE port of https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/6906

See merge request gitlab-org/gitlab-ce!21903