Adds background migration that will create records corresponding
records in `merge_request_cleanup_schedules` for merge requests
that are closed/merged.

These records will be later on queried by a cron worker so they
merge request refs of those MRs will be cleaned up accordingly.

Also log additional information and reduce the number of jobs
scheduled per minute from 300 to 180.

Query the `merge_request_cleanup_schedules` table for records
that are scheduled to be cleaned up. Limited at 300 records per
minute.

Instead of scheduling sidekiq jobs and keeping them in redis
for 14 days before they get performed, we set the schedule in the
DB.

This is to prevent huge number of scheduled jobs in cases when
there are a lot of closed/merged MRs.

This table has the `scheduled_at` and `completed_at` columns
which will be populated when a MR is scheduled to be cleaned up
and when the clean up is done.

Remove unpacked mapping from artifact

See merge request gitlab-org/gitlab!47255

Remove bootstrap-looking component class from docs example

See merge request gitlab-org/gitlab!38534

Fix milestone payload when updating releases through the UI

See merge request gitlab-org/gitlab!47222

Fix relative path not found on production web server

See merge request gitlab-org/gitlab!47090

Make register_instructions optional in RunnerSetup

See merge request gitlab-org/gitlab!47123

Remove signup flow experiment feature flag

See merge request gitlab-org/gitlab!47168

Geo: Feature flag Self-service framework verification

See merge request gitlab-org/gitlab!46998

Remove unnecessary expand sha button

See merge request gitlab-org/gitlab!47012

Edit CI schedules doc based on Vale

See merge request gitlab-org/gitlab!46958

Mock deploy freeze time for frontend fixture

See merge request gitlab-org/gitlab!46942

Moves the fixture generated data for the deploy
freeze specs to a shared helper for reuse.

Move runner variable config docs

See merge request gitlab-org/gitlab!47160

Some runner features can be configured with variables,
but these details should be in the runner docs, not
the CI YAML ref.

Add type and type tests to GraphQL resolvers

See merge request gitlab-org/gitlab!46539

- Add type declaration
- Add field declarations tests (including lookahead)
Co-authored-by: Alex Kalderimis <alex.kalderimis@gmail.com>

Remove duplicated BS display properties from Wiki sidebar

See merge request gitlab-org/gitlab!47128

Remove several instances of the word "please" from docs

See merge request gitlab-org/gitlab!47240

Explain how to limit vale alerts levels

See merge request gitlab-org/gitlab!47154

Fix login and signin grammar errors

See merge request gitlab-org/gitlab!47145

Expand vale rule to catch known bad grammar for
login and signin, and fix all examples

Removes several instances of please from the docs.

Fix cop FactoryBot/InlineAssociation for designs_management factories

See merge request gitlab-org/gitlab!45766

Execute HTTP calls to Kubernetes in Sidekiq Worker Job

See merge request gitlab-org/gitlab!47065

Update admin docs to clarify helm charts installs

See merge request gitlab-org/gitlab!47031

Docs: Update doc publish nuget package using CI/CD

See merge request gitlab-org/gitlab!47132

Refactor pipeline header to use GraphQL mutations

See merge request gitlab-org/gitlab!47011

Add documentation for `container_scanning` FIPS support

See merge request gitlab-org/gitlab!46507

docs: Add changelog entry
docs: add documentation on CS_MAJOR_VERSION
docs: add example of how to use older version

Use help_page_path for links in PipelineTourSuccessModal

See merge request gitlab-org/gitlab!47025

Quarantine create_project_spec.rb on staging only

See merge request gitlab-org/gitlab!47223