Run static memory benchmarks from 'derailed_benchmarks' in CI

See merge request gitlab-org/gitlab-ce!29618

Resolve "Username availability checker breaks inline validation"

Closes #62980

See merge request gitlab-org/gitlab-ce!29678

Knative version bump 0.5 -> 0.6

See merge request gitlab-org/gitlab-ce!28798

Adds missing class in collapsible sections

Closes #63417

See merge request gitlab-org/gitlab-ce!29804

Backport of 12014-incremental-es-wiki-updates

See merge request gitlab-org/gitlab-ce!29531

Docs: Correct upgrade guides for 12.0

See merge request gitlab-org/gitlab-ce!29846

It's fine to upgrade from 11.11.x to 12.x, so we remove the requirement
to first upgrade to 12.0.x.

Will apply identation from
CSS to collapsible sections

Merge branch '63399-intermittent-spec-failure-in-spec-models-ci-pipeline_schedule_spec-rb-131' into 'master'

Resolve "Intermittent spec failure in spec/models/ci/pipeline_schedule_spec.rb:131"

Closes #63399

See merge request gitlab-org/gitlab-ce!29838

Refactor file locking docs

See merge request gitlab-org/gitlab-ce!29686

- Remove outdated 'introduced in' section
- Update/remove images

Fixes flaky master

Two static memory benchmarks will be included in our CI pipeline. It
will load gems from the Gemfile and check the amount of RAM consumed
as well as the number of objects allocated and retained.
Aggregated values will be included as 'metrics' into MRs while full
reports will be downloadable as job artifacts.

Unquarantine the branches E2E test

Closes gitlab-org/quality/nightly#62

See merge request gitlab-org/gitlab-ce!29828

Docs: Added source upgrade guides for 12.0.0

See merge request gitlab-org/gitlab-ce!29795

Document Usage Quotas group settings page

Closes #63022

See merge request gitlab-org/gitlab-ce!29599

Add zoom call section in issue data page

See merge request gitlab-org/gitlab-ce!29815

Add changelog entry for the new operations_feature_flags_clients.token_encrypted column

See merge request gitlab-org/gitlab-ce!29820

We missed to add this in
https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/29320.

Related to https://gitlab.com/gitlab-org/gitlab-ce/issues/57918

Unquarantine merge tests

Closes gitlab-org/quality/nightly#93 and gitlab-org/quality/nightly#94

See merge request gitlab-org/gitlab-ce!29833

Crosslink Mattermost integrations, simplify components list

See merge request gitlab-org/gitlab-ce!29317

Allow developers to delete tags

Closes #52954

See merge request gitlab-org/gitlab-ce!29668

This commit adds
 - feature specs
  - to test the ability of a user with "developer" permission
    to delete tags in repositories.
 - documentation

Fix Container Scanning job with K8S runners

Closes gitlab-ee#11448

See merge request gitlab-org/gitlab-ce!29706

Add note about not translating API messages.

See merge request gitlab-org/gitlab-ce!29748

Add identity information to external authorization requests

See merge request gitlab-org/gitlab-ce!29461

Issue: https://gitlab.com/gitlab-org/gitlab-ce/issues/61201#

Fix missing API notification flags for Microsoft Teams

See merge request gitlab-org/gitlab-ce!29824

Demote new section

See merge request gitlab-org/gitlab-ce!29829

Un-quarantine OAuth spec

Closes gitlab-org/quality/nightly#100

See merge request gitlab-org/gitlab-ce!29764