Added relevant tests for this file.

Got rid off unnecessary refactoring.

Used new serializer in Environments controller.
Created review app snippet.
Refactored project logic into a new module.

Update Gitaly to v1.80.0

See merge request gitlab-org/gitlab!22654

Refactor Akismet service

See merge request gitlab-org/gitlab!22651

Docs for SSH Keys: Refine pasting from clipboard wording

See merge request gitlab-org/gitlab!22188

- Takes serialisable string arguments instead of an object

Geo: Check for a current node in `rake gitlab:geo:check`

Closes #13352

See merge request gitlab-org/gitlab!22436

- It always outputs the current node name.
- On success, it also outputs the current node type (primary
  or secondary).
- On failure, it also outputs the names of all nodes in the DB.

Geo - Make design repository synchronization general available

Closes #36096

See merge request gitlab-org/gitlab!22544

The design repositories synchronization is now GA.

Show Graphql type descriptions

See merge request gitlab-org/gitlab!22568

- Backfill GraphQL type descriptions
- Modify template to show GraphQL type descriptions

Add job artifacts troubleshooting steps

Closes gitlab-com/support/docs#20

See merge request gitlab-org/gitlab!21168

Correct spelling across many files.

See merge request gitlab-org/gitlab!22643

Capitalize "admin area" to unify the docs

See merge request gitlab-org/gitlab!22221

Remove unused keyword from EKS provision service

See merge request gitlab-org/gitlab!22633

After performing automated spell checks across the entire docset,
this merge request corrects many spelling errors across the
documentation.

Refactor Geo Node Card

Closes #11326

See merge request gitlab-org/gitlab!21876

Move Node URL to body

https://gitlab.com/gitlab-org/gitlab/merge_requests/21876

Support filtering by epics in IssuesFinder

See merge request gitlab-org/gitlab!22477

Disable Review App related jobs for the security fork

Closes #195800

See merge request gitlab-org/gitlab!22606

Compress all documentation PNG images using pngquant

See merge request gitlab-org/gitlab!22498

Pass demodulize class name for BackgroundMigrationWorker

See merge request gitlab-org/gitlab!22451

DeleteService for deleting the self monitoring project

See merge request gitlab-org/gitlab!21995

Create a DeleteService which can be used to delete the self monitoring
project.

Resolve "External Wiki integration: Test always fails when saving"

Closes #21153

See merge request gitlab-org/gitlab!19568

Replace Ruby 2.1/2.2/2.3 with Ruby 2.6 (and 2.7)

See merge request gitlab-org/gitlab!22570

Update documentation for DS MAVEN_CLI_OPTS

See merge request gitlab-org/gitlab!22126

Since
https://gitlab.com/gitlab-org/gitlab/merge_requests/18048,
we no longer accept constants outside of
Gitlab::BackgroundMigration

Restore spec file with following changes:
- update schema: 2020_01_02_170221 to make spec work again
- Update spec for demodulized class name

Allow updates to container_expiration_policy in the project API

See merge request gitlab-org/gitlab!22180

Document Praefect PostgreSQL setup steps

See merge request gitlab-org/gitlab!21765