Docs: Delete orphaned images in `merge_requests/img`

Closes #61438

See merge request gitlab-org/gitlab-ce!28346

Resync the docs that were submitted to EE instead of CE

See merge request gitlab-org/gitlab-ce!28389

Fix emojis URLs

Closes #61914

See merge request gitlab-org/gitlab-ce!28371

Add subheadings to components page

See merge request gitlab-org/gitlab-ce!28382

Fix docs intro version for force auth for approvers

See merge request gitlab-org/gitlab-ce!28390

This feature was introduced in 12.0, not in 11.11.

Use process timer for jest timeout testing

See merge request gitlab-org/gitlab-ce!28209

Upgrade gitlab-shell to 9.2.0

See merge request gitlab-org/gitlab-ce!28372

Add haml-lint.yml to FE for roulette

See merge request gitlab-org/gitlab-ce!28301

Main change is to bump .ruby-version to 2.6.3 so versions
are consistent for the GDK.

Resolve CE/EE diffs in admin user access levels

Closes gitlab-ee#10507

See merge request gitlab-org/gitlab-ce!28359

Resolve CE/EE diffs in mirror repos settings

Closes gitlab-ee#11036

See merge request gitlab-org/gitlab-ce!28361

Explain render_if_exists opts caveat

See merge request gitlab-org/gitlab-ce!28366

Document what to do if review jobs keep failing

See merge request gitlab-org/gitlab-ce!28367

CE backport of "Configure the number of ES shards and replicas"

See merge request gitlab-org/gitlab-ce!28329

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

Omit max-count for diverging_commit_counts behind feature flag

See merge request gitlab-org/gitlab-ce!28157

Changed the placeholder text of the diff tree filter input

Closes #58339

See merge request gitlab-org/gitlab-ce!28352

Disallow the review-deploy and review-qa-smoke jobs to fail

See merge request gitlab-org/gitlab-ce!28314

Add :registrations_recaptcha feature flag

Closes gitlab-ee#11389

See merge request gitlab-org/gitlab-ce!28296

Fix. db:migrate is failed on MySQL 8

See merge request gitlab-org/gitlab-ce!28351

Resolve "Error 500 viewing admin/projects page: undefined method `storage_size' for nil:NilClass"

Closes #49915

See merge request gitlab-org/gitlab-ce!28355

Explain `render_if_exists` relative path

See merge request gitlab-org/gitlab-ce!28356

Resolve CE/EE diffs in _flash_messages

Closes gitlab-ee#11037

See merge request gitlab-org/gitlab-ce!28333

Part of single codebase changes.

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

Part of single codebase changes.

Update Rubocop to 0.69.0 and other gems

See merge request gitlab-org/gitlab-ce!28345

Fixes style-lint issues for blocks.scss

Closes #59838

See merge request gitlab-org/gitlab-ce!28251

Closes https://gitlab.com/gitlab-org/gitlab-ce/issues/58339

Allows instance owners to toggle the recaptcha requirement
on the user registration page by feature flag.
Allows GitLab Growth team to measure
reCAPTCHA's impact on registrations.

Include MR information if possible when emailing notification of closing an issue

Closes #19569

See merge request gitlab-org/gitlab-ce!15610