Merge branch '9768-allow-a-template-in-a-namespace-which-is-out-of-the-hierarchy-of-the-group-owning-the-template-ce-doc' into 'master'

Doc for "Allow a template in a namespace which is out of the hierarchy of the Group owning the template"

See merge request gitlab-org/gitlab-ce!30601

Doc for "Allow a template in a namespace which is out of the
hierarchy of the Group owning the template"

Introduce data-qa-selector to supplant .qa-class

See merge request gitlab-org/gitlab-ce!28906

Docs: Fix whitespace in administration docs

See merge request gitlab-org/gitlab-ce!30554

Many code blocks are 4spaced, and they render in GitLab
without coloring as a result, even though they are
fenced with a language label. If in a list, other items
will render as being in a code block too, even if not
meant to. This fixes all these issues for many admin
docs in /high_availability and /auth (part 1)

Add modal close button styles to match design spec

See merge request gitlab-org/gitlab-ce!30423

Standard font weight and line height, darker color, full opacity
Change `button.close` to `.close`
Some existing modal buttons are links rather than buttons

Geo Update note about internal_url

See merge request gitlab-org/gitlab-ce!30573

Remove hard tabs from docs

See merge request gitlab-org/gitlab-ce!30445

Hard tabs do not follow general markdown guidelines
are were removed from the few docs that used them

Remove setImmediate polyfill from production assets

See merge request gitlab-org/gitlab-ce!30591

Update index.md - Fixing a minor typo on the postgreSQL setup instructions

See merge request gitlab-org/gitlab-ce!30437

Update dependency @gitlab/ui to ^5.6.0

See merge request gitlab-org/gitlab-ce!30544

Shorten test description

See merge request gitlab-org/gitlab-ce!30638

Explicitly create resources via the API

See merge request gitlab-org/gitlab-ce!30639

Explicitly create resource via browser ui

See merge request gitlab-org/gitlab-ce!30640

CE backport for Dismissal Reasons

See merge request gitlab-org/gitlab-ce!29422

Set modal header/title size to match design spec

See merge request gitlab-org/gitlab-ce!30420

Apply modal border-radius only to direct children

See merge request gitlab-org/gitlab-ce!30645

Move EE differences for `app/views/projects/tree/_tree_content.html.haml`

Closes gitlab-ee#12557

See merge request gitlab-org/gitlab-ce!30455

Reuses existing TreeHelper instead of creating a new one just for one
method.

Clean up CI reports

See merge request gitlab-org/gitlab-ce!30272

Also, `SAST_CONFIDENCE_LEVEL` has been renamed in
https://gitlab.com/gitlab-org/security-products/sast/merge_requests/72

Add `db_spin` and refactor ChaosController

Closes #64425

See merge request gitlab-org/gitlab-ce!30559

Remove unused method

Closes #64388

See merge request gitlab-org/gitlab-ce!30576

Add end-to-end test for creating and editing issue comments

See merge request gitlab-org/gitlab-ce!30571

Add endpoint to move issues in boards

See merge request gitlab-org/gitlab-ce!30216

Display the amount for Hashed Storage migration/rollback correctly

Closes #63667

See merge request gitlab-org/gitlab-ce!29996

Remove Rails 4-specific code from `FromUnion.from_union`

Closes #51575

See merge request gitlab-org/gitlab-ce!30587

Upgrade Gitaly to v1.53.0

See merge request gitlab-org/gitlab-ce!30614

Updates frontend to Frontend

See merge request gitlab-org/gitlab-ce!30631

Fix whitespace in install and integration docs

See merge request gitlab-org/gitlab-ce!30600