Revert "Merge branch '21801-remigrate-epic-user-mentions' into 'master'"

See merge request gitlab-org/gitlab!27198

Prevent using `with_lock_retries` within `change` method

See merge request gitlab-org/gitlab!27064

Document how to convert your Jenkins agents to Runners

Closes #208382

See merge request gitlab-org/gitlab!26865

Add notes on shared fleet

Apply suggestion to doc/ci/jenkins/index.md

Make gitlab.com code to get past linter

Apply suggestion to doc/ci/jenkins/index.md

Add Agents vs. Runners docs

Add notes on shared fleet

Apply suggestion to doc/ci/jenkins/index.md

Make gitlab.com code to get past linter

Apply suggestion to doc/ci/jenkins/index.md

Remove duplicated section

Curse this linter

Apply suggestion to doc/ci/jenkins/index.md

Apply suggestion to doc/ci/jenkins/index.md

Fix flaky pipeline spec

See merge request gitlab-org/gitlab!27126

Create open_project_tracker_data table migration

See merge request gitlab-org/gitlab!26966

Improve UX project/group ci variables

See merge request gitlab-org/gitlab!26098

Added fallback tolerance to epic tree drag

See merge request gitlab-org/gitlab!26920

Add ability to edit health status in Issue sidebar

See merge request gitlab-org/gitlab!25371

Reorder exported relations by primary_key

See merge request gitlab-org/gitlab!27117

Document implicit schema for JSON logging

See merge request gitlab-org/gitlab!26508

Doc: Move the settings and index docs to CI folder

See merge request gitlab-org/gitlab!26859

Docs backend guides GraphQL

See merge request gitlab-org/gitlab!23247

- the data table will be used for storing data specific
for the service

Resolve "Differentiate between errors/failures in xUnit result"

See merge request gitlab-org/gitlab!23476

Move HasRef concern inside Ci namespace

See merge request gitlab-org/gitlab!27056

- Fixed column widths
- Popover for values/key/scope
- Sorting ability by key
- Modal layout change
- Styling changes
- Display table text adjustments

Group repository contributors by email

See merge request gitlab-org/gitlab!26899

This was changed because it seemed undesirable
to split chart when user changes git name.

Issue:
https://gitlab.com/gitlab-org/gitlab/issues/196961

Stop using Gitlab::Shell in replicate specs

See merge request gitlab-org/gitlab!27164

Add support for async search within Epics dropdown

See merge request gitlab-org/gitlab!26980

Remove marginalia traces in query matcher

See merge request gitlab-org/gitlab!26988

Marginalia appends unique `correlation_id` on SQL queries and results in
incorrect similarity matching between expected and actual query in logs.

The pipelines docs are under `user/project` but should be
with the rest of the CI docs under `/ci`

This change updates the location of `settings.md` and the
`pipelines.md`

* move `/user/project/settings.md` to `ci/pipelines` folder

* update references to `settings.md` to point to the new location

* move images to the new location and delete the old directory

* move `pipelines.md` to `index.md` in the new ci/pipelines folder

Docs: Add argument validation to GraphQL Styleguide

See merge request gitlab-org/gitlab!26239

Add button to create a Release through the UI

Closes #32812

See merge request gitlab-org/gitlab!24516

Migrate ee/multiple_assignees to Jest

Closes #194296

See merge request gitlab-org/gitlab!27204

Optimize notes counters in usage data

See merge request gitlab-org/gitlab!26871

Fix BulkInsertSafe to support encrypted and enums fields

See merge request gitlab-org/gitlab!27203

feat: 2FA for admin mode

Closes #35079

See merge request gitlab-org/gitlab!22281

Users that have 2FA setup must use it before activating admin mode

Add clarification on elastic stack and advanced search

See merge request gitlab-org/gitlab!27092

Add documentation for multiple vulnerability selection

Closes #42769

See merge request gitlab-org/gitlab!26923

Adds images and doces for the new ,ultiple select feature in the
security dashboards

Make design cards dropzones

See merge request gitlab-org/gitlab!26446

No tests yet

Implement publish incident service

See merge request gitlab-org/gitlab!26785