Update instructions for adding a member/group

See merge request gitlab-org/gitlab!80618

Owners of personal projects to have OWNER access level

See merge request gitlab-org/gitlab!78193

Owners of personal projects are displayed as maintainers in the members
page. This change fixes inconsistency for new projects. It is behind
the personal_project_owner_with_owner_access feature flag.

Update documentation with the details of Corpus management

See merge request gitlab-org/gitlab!77430

Default on :cluster_vulnerabilities feature flag

See merge request gitlab-org/gitlab!78140

Use using_connection similar to how JobCoordinator does it

See merge request gitlab-org/gitlab!80351

Remove prohibit_hexadecimal_branch_names feature flag

See merge request gitlab-org/gitlab!80603

Improve branch defs in repository branch API

See merge request gitlab-org/gitlab!80505

Allow spawning metrics_server instead of forking into it

See merge request gitlab-org/gitlab!80191

This provides better memory use for Puma, and we
will require this for running a non-Ruby server
in the future.

This does not actually start the server for Puma
yet.

Change opened to created

See merge request gitlab-org/gitlab!80378

Fix metric keys changing with switch to Ci connection

See merge request gitlab-org/gitlab!80354

Upgrade to Rails v6.1.4.6

See merge request gitlab-org/gitlab!80579

Add warning notification in settings > monitor page

See merge request gitlab-org/gitlab!80696

Docs for logging visibility and deprecations

See merge request gitlab-org/gitlab!79944

We should try to improve this we don't have to sprinkle
using_connection in various places

ci: Bump all global cache keys for Debian bullseye

See merge request gitlab-org/gitlab!80656

Roadmap settings - Include subgroup in group milestones

See merge request gitlab-org/gitlab!80685

cluster_vulnerabilities is now default in 14.8.

- change default from false to true

Changelog: changed

Doc updates for SAST/SD rule overrides

See merge request gitlab-org/gitlab!80567

Doc updates for SAST & Secret-Detection Custom Rule overrides

Remove dependency scanning variable

See merge request gitlab-org/gitlab!79575

Depreciation of oauth tokens with no expiry

See merge request gitlab-org/gitlab!79178

Fix merge request tabs background leakage

See merge request gitlab-org/gitlab!80612

Issue: https://gitlab.com/gitlab-org/gitlab/-/issues/343197
Changelog: fixed

Improve access token wording for deprecation

See merge request gitlab-org/gitlab!80569

This also updates the Gemfile.lock to contain the rainbow gem,
which was added to Gemfile earlier.

@rails/actioncable and @rails/ujs likely haven't changed, but we
should make the frontend versions consistent with the Rails backend
version.

* Diff: https://github.com/rails/rails/compare/v6.1.4.4...v6.1.4.6

Relates to https://gitlab.com/gitlab-org/gitlab/-/issues/352659

Changelog: security

Deprecate legacy Gitaly config methods

See merge request gitlab-org/gitlab!80545