This reverts commit 3781ac1d.

Rouge v3.8.0+ has a bug in the JSON lexer:
https://github.com/rouge-ruby/rouge/issues/1330.

Let's revert until that is fixed.

Closes https://gitlab.com/gitlab-org/gitlab/issues/32045

Considerably improve the query performance for MR discussions load

See merge request gitlab-org/gitlab!16635

Eliminate analytics feature flag

See merge request gitlab-org/gitlab!16663

Switched Milestone and Release to many-to-many relationships

See merge request gitlab-org/gitlab!16517

Fixes for Docker Registry Replication

See merge request gitlab-org/gitlab!16196

Update doc/raketasks/cleanup.md

See merge request gitlab-org/gitlab!16613

Database table for language trends over time

See merge request gitlab-org/gitlab!16491

- Introduce new DB table for tracking language trend over time.
- Initial model for Analytics::LanguageTrend::RepositoryLanguage

Added Problem Validation issue template

See merge request gitlab-org/gitlab!16595

Productivity Analytics: Add metric column component

See merge request gitlab-org/gitlab!16742

- This ensures that we render numeric values only
The component renders a dash for non-numeric and null values

Add note on expose_path helper usage to API docs

See merge request gitlab-org/gitlab!16797

Updated Release services spec files.
Fixed Post-migration file.
Removed obsolete comments.
Fixed coding style in spec files.

Updated 'milestone' param to 'milestones'.
Updated payload examples accordingly.

Added tests for Create and Update release services.
Fixed DestroyService release rspec test.

Updated models to set up the new relationship.
Updated spec files and fixtures as well.

Added migration to remove id column from table.
Removed uniqueness validation on MilestoneRelease
since the index over the two foreign_key plays
the same role.

Updated Release model and its spec file.
Updated Milestone model and its spec file.

Fixes a couple of bugs related to how we push manifest.
We don't process the doc now.

Remove Ruby elasticsearch repository indexer

See merge request gitlab-org/gitlab!15641

Add review app cluster health troubleshooting guidance

See merge request gitlab-org/gitlab!16520

Fix all instances of no-unused-vars

See merge request gitlab-org/gitlab!16684

Migrate approvals_before_merge column to a rule

See merge request gitlab-org/gitlab!16121

Set default http status of a successful ServiceResponse

See merge request gitlab-org/gitlab!16608

Docs: update Time Tracking

See merge request gitlab-org/gitlab!16627

Update "slash commands" to "quick actions"

Fix analytics dropdown deselect bug

See merge request gitlab-org/gitlab!16778

Disable interruptible pipeline feature flag by default

See merge request gitlab-org/gitlab!16786

Fix naming of constant

See merge request gitlab-org/gitlab!16769

Allow Danger commit_messages rule to work locally

See merge request gitlab-org/gitlab!16593

Avoid Devise "401 Unauthorized" responses

Closes #29155

See merge request gitlab-org/gitlab!16519

Update Dep. Scanning supported languages

See merge request gitlab-org/gitlab!16614

Remove a note saying that Dependency Scanning for Python
is limited to requirements.txt files, since setup.py
is also supported.

Add restricted user/group protected branch test

Closes gitlab-org/quality/testcases#117

See merge request gitlab-org/gitlab!16358