[Documentation] Fix minor issues in search API doc

Closes #54959

See merge request gitlab-org/gitlab-ce!23645

Remove Sidekiq::Testing in RepositoryController spec

See merge request gitlab-org/gitlab-ce!23653

CE Backport: Fix labels tooltip in collapsed Epics sidebar

See merge request gitlab-org/gitlab-ce!23647

Fix duplicate boardsStore variable in milestone select

Closes #54139

See merge request gitlab-org/gitlab-ce!23625

Update docs' Dangerfile

See merge request gitlab-org/gitlab-ce!23620

Use FastDestroy for deleting uploads

Closes #46069

See merge request gitlab-org/gitlab-ce!20977

Add CI/CD build encrypted tokens (after revert)

Closes #52342

See merge request gitlab-org/gitlab-ce!23649

Fixed misreported error codes and elaborated

See merge request gitlab-org/gitlab-ce!23642

Add a flag to use a subquery for group issues search

See merge request gitlab-org/gitlab-ce!23445

Document `/help` tests

See merge request gitlab-org/gitlab-ce!23469

Update gitlab runner helm chart to 0.1.39

Closes gitlab-runner#3807

See merge request gitlab-org/gitlab-ce!23633

Brings back 1e8f1de0 reverted in !23644

Closes #52342

See merge request gitlab-org/gitlab-ce!23436

Fix broken seeder 11.6

Closes #54949

See merge request gitlab-org/gitlab-ce!23608

Truncate merge request titles with periods instead of ellipsis

Closes #54862

See merge request gitlab-org/gitlab-ce!23558

Add section about enabling feature flag in development

See merge request gitlab-org/gitlab-ce!23634

Pass commit when posting diff discussions

See merge request gitlab-org/gitlab-ce!23371

Dropdown: Make Identicons of a subgroup in the breadcrumb dropdown not take a whole line

Closes #51138 and #54026

See merge request gitlab-org/gitlab-ce!23062

Closes https://gitlab.com/gitlab-org/gitlab-ce/issues/54862

Remove un-used data from discussions endpoint

Closes #54288

See merge request gitlab-org/gitlab-ce!23570

Documentation for Group-level Kubernetes cluster configuration

See merge request gitlab-org/gitlab-ce!22804

Revert "Merge branch 'fix/gb/encrypt-ci-build-token' into 'master'"

See merge request gitlab-org/gitlab-ce!23644

We don't need a series of attributes to render diff files on
discussions.json request. Therefore this MR removes lots of unnecessary
attributes from the request, mainly the highlighted diff lines, which
are pretty expensive.

This reverts commit 1e8f1de0, reversing
changes made to 62d97112.

Group level labels can be used in subgroups and projects

See merge request gitlab-org/gitlab-ce!23643

Docs: fixes blockquotes syntax

See merge request gitlab-org/gitlab-ce!23638

Move default brand title to a method

See merge request gitlab-org/gitlab-ce!23632

Upgrade gitlab-ui dependency

See merge request gitlab-org/gitlab-ce!23611

Disable Sidekiq feature flag check if features table does not exist

Closes #54718

See merge request gitlab-org/gitlab-ce!23639

Security update of gem rails to version 4.2.11

See merge request gitlab-org/gitlab-ce!23520