This is improve performance of discussions.json by caching.

Locally, when request hits a warm cache, it shows improvement
from 10s to 1.5s for 100+ discussions. For 100+ discussions, each
request reads `203569` bytes.

This is implemented behind `merge_request_discussion_cache` feature
flag and only works for merge requests. This is to see how it is
going to perform on production and to ensure we can turn the feature
off if there are unexpected bugs.

Pin redis to 4.1.x, update redis-namespace

See merge request gitlab-org/gitlab!65455

Update color scheme of createFlash to match Pajamas

See merge request gitlab-org/gitlab!65315

Update link test image version

See merge request gitlab-org/gitlab!64751

Remove tests from quarantine

See merge request gitlab-org/gitlab!65408

Remove setting `@branch_name` in QA::Resource::Repository::WikiPush

See merge request gitlab-org/gitlab!65422

Add limitations for GitHub CI/CD

See merge request gitlab-org/gitlab!64976

More updates to Threads for CTRT

See merge request gitlab-org/gitlab!65291

Related to: https://gitlab.com/gitlab-org/gitlab/-/issues/327171

Add rel property to help link

See merge request gitlab-org/gitlab!65428

Add prefix to autocomplete path

See merge request gitlab-org/gitlab!65508

Add project-level DORA metrics to GraphQL

See merge request gitlab-org/gitlab!64961

Blob refactor: Create empty viewer

See merge request gitlab-org/gitlab!65438

Changelog: other

Add documentation on the compliance dashboard drawer

See merge request gitlab-org/gitlab!65224

Remove duplicate note from Geo dev documentation

See merge request gitlab-org/gitlab!65445

Improve UI text for initial branch name setting

See merge request gitlab-org/gitlab!65402

Update tests for templates to support default branch

See merge request gitlab-org/gitlab!65266

E2E: Add allure metadata in after block

See merge request gitlab-org/gitlab!65418

The failures were caused by a feature flag change, and the flag is now
enabled by default, which allows the tests to pass.

After the change by
https://gitlab.com/gitlab-org/gitlab/-/merge_requests/34295
the global /autocomplete path no longer works
and the /-/ (hyphen) prefix is required to avoid a 404

Fixes https://gitlab.com/gitlab-org/gitlab/-/issues/332556

Changelog: fixed

Remove unused HAML and CSS in members

See merge request gitlab-org/gitlab!65180

Avoid duplicate root ancestor calculation when syncing traversal_ids

See merge request gitlab-org/gitlab!65480

Compress all Pages assets in CI

See merge request gitlab-org/gitlab!65109

E2E: Fix webdriver_headless setting

See merge request gitlab-org/gitlab!65486

Ensure any args are passed onto sidekiq

See merge request gitlab-org/gitlab!65393

Reordered docs to match UI

See merge request gitlab-org/gitlab!65485

Docs: made images smaller

See merge request gitlab-org/gitlab!65487

Raise the error when repository storage move fails

See merge request gitlab-org/gitlab!65292

Docs: Edited intro and use cases

See merge request gitlab-org/gitlab!65490

Some recent refactoring to Vue has allowed us to remove some unused
HAML and CSS

Update Pages topic to a tutorial style

See merge request gitlab-org/gitlab!65449

Document DAST_ADVERTISE_SCAN DAST CI/CD variable

See merge request gitlab-org/gitlab!65213