Enable update_(build|pipeline) for maintainers

Closes #45905

See merge request gitlab-org/gitlab-ce!18735

Fix link to MR for Maintainer Access docs

See merge request gitlab-org/gitlab-ce!18951

Fix minor typo of main docs page

See merge request gitlab-org/gitlab-ce!18952

Correct skewed Kubernetes popover illustration

Closes #46345

See merge request gitlab-org/gitlab-ce!18949

Move SquashBeforeMerge vue component

See merge request gitlab-org/gitlab-ce!18813

Backport EE-specific untrusted regexp implementation

See merge request gitlab-org/gitlab-ce!18938

Improve the code review section in MR templates.

See merge request gitlab-org/gitlab-ce!18920

More verbose logging for deprecated path access

See merge request gitlab-org/gitlab-ce!18943

Fix cross-origin errors when attempting to download JavaScript attachments

Closes #45826

See merge request gitlab-org/gitlab-ce!18936

update sidekiq 5.0 -> 5.1

See merge request gitlab-org/gitlab-ce!18765

Resolve "[Rails5] Fix spec/models/ci/pipeline_spec.rb"

Closes #46229

See merge request gitlab-org/gitlab-ce!18906

Current logging tells us we've isolated the calls to about 5 call sites,
now we'd like to know what is calling these methods.

Change `expect` to `except` on help page

See merge request gitlab-org/gitlab-ce!18940

Resolve "`sha-mismatch` vue component is rendering an empty block"

Closes #45462

See merge request gitlab-org/gitlab-ce!18884

Add `createComponentWithMixin` to create anonymous components with mixins

See merge request gitlab-org/gitlab-ce!18899

Fix system hook not firing for blocked users when LDAP sign-in is used

Closes #46307

See merge request gitlab-org/gitlab-ce!18930

Update secpick to use security branches

See merge request gitlab-org/gitlab-ce!18937

Add Code Review documentation that maintainers also perform code review

See merge request gitlab-org/gitlab-ce!18911

Fix gitaly-ruby bundle poisoning in CI

Closes gitaly#1184 and gitaly#1169

See merge request gitlab-org/gitlab-ce!18853

Update runner links to repo based on restructuring

See merge request gitlab-org/gitlab-ce!18919

Replace the `project/forked_merge_requests.feature` spinach test with an rspec analog

See merge request gitlab-org/gitlab-ce!18867

Resolve "Remove redundant tooltips on activity tabs"

Closes #46164

See merge request gitlab-org/gitlab-ce!18918

Replace the `project/commits/diff_comments.feature` spinach test with an rspec analog

See merge request gitlab-org/gitlab-ce!18868

Remove an extra backtick from Group Milestones API documentation

See merge request gitlab-org/gitlab-ce!18913

If you upload a file with a .js extension, Rails' cross-origin JavaScript
protection will prevent a user from downloading the file with a 422 error.
Setting the content-type to `text/plain` will allow the user to download
the file as a plaintext file.

Closes #45826

An LDAP sign-in request results in a different request parameter than
a standard GitLab sign-in. Since Warden doesn't pass us the user that
was blocked, we first search for a `username` in the request parameters
and then look for `user.login`.

Closes #46307