Merge branch '301013-factories-do-not-allow-subgroups-to-be-created-under-namespaces-allow-them-to-be-created' into 'master'

Resolve "Validate the nature of the parent for `Group` & `Namespace`"  [RUN ALL RSPEC] [RUN AS-IF-FOSS]

See merge request gitlab-org/gitlab!54094

This change adds validation to check the nature
of parent for Group & Namespace records

Project Settings Repository Protected Tags Header Expand/Collapse 4/8

See merge request gitlab-org/gitlab!55231

Project Settings General Headers (h4 elements) expand/collapse on
mouse-click / tap, like using the Expand/Collapse button. Other h4
headers in other Project Settings pages do not expande/collapse on
mouse-click / tap, but only using the Expand/Collapse button. This may
seem inconsistent to the user.

The h4 headers of Project Settings General get the expand/collapse
behavior through classes settings-title, js-settings-toggle and
js-settings-toggle-trigger-only.

This MR adds classes settings-title, js-settings-toggle and
js-settings-toggle-trigger-only to the h4 headers in Project Settings
Repository Protected tags. This enables the expand/collapse behavior on
mouse-click / tap for the h4 headers.

Improve realism of policy spec

See merge request gitlab-org/gitlab!55319

Move two more examples to source projects

See merge request gitlab-org/gitlab!55329

Enable `trace_memory_allocations` by default

See merge request gitlab-org/gitlab!55369

Some light cleanup of pipeline settings doc

See merge request gitlab-org/gitlab!55332

Verify background migration arguments in specs [RUN ALL RSPEC]

See merge request gitlab-org/gitlab!54339

This enables `trace_memory_allocations`
by default

Update Gitaly version

See merge request gitlab-org/gitlab!55366

Remove obsolete DOMContentLoadedEventListener

See merge request gitlab-org/gitlab!54912

Include wiki_size and storage_size in NamespaceStatistics

See merge request gitlab-org/gitlab!54967

Dry up notes build service spec

See merge request gitlab-org/gitlab!54632

Better ReleaseHighlight validation

See merge request gitlab-org/gitlab!55009

Ensure metric embed store is not initialized on every page

See merge request gitlab-org/gitlab!55342

Note update frequency for project security dashboard

See merge request gitlab-org/gitlab!55337

Remove historic minergate trigger

See merge request gitlab-org/gitlab!54910

Update Gitaly version

See merge request gitlab-org/gitlab!55358

Extend the Graphql/Descriptions cop to cover enum value descriptions

See merge request gitlab-org/gitlab!55132

Return suite_errors in test suite comparer

See merge request gitlab-org/gitlab!54980

Remove deprecated button variant in groups, projects and snippets

See merge request gitlab-org/gitlab!54747

Remove saml_group_links feature flag [RUN ALL RSPEC] [RUN AS-IF-FOSS]

See merge request gitlab-org/gitlab!54986

Removes the GitLab.com-only saml_group_links feature flag. The
feature has been default-enabled on GitLab.com since 13.7 with
no issues requiring it be disabled.

Clean up language in git_submodules doc

See merge request gitlab-org/gitlab!55351

In this commit, we include wiki_size and storage_size in
NamespaceStatistics, and also several callbacks to update
these columns when certain actions happen.

This extends the existing matchers for scheduled migrations to also
verify that executing the background migration with the given arguments
doesn't raise any errors.

This makes sure that the post-deployment migration passes the arguments
correctly to the background migration, and also catches incomplete test
setups.

Update dependency eslint to v7.21.0

See merge request gitlab-org/gitlab!55326

Limit the changes for Danger

See merge request gitlab-org/gitlab!55154

Remove `.allow-wrap` css class

See merge request gitlab-org/gitlab!54810

Improve Metrics Dictionary docs

See merge request gitlab-org/gitlab!55086

Add edit value stream feature specs

See merge request gitlab-org/gitlab!54209

Add How to review for Product Intelligence changes to docs

See merge request gitlab-org/gitlab!55156

  - Add page for Product Intelligence review
  - Link from Usage Ping guide