Fix failing spec in ee/spec/features/boards/sidebar_spec.rb

Closes #216364

See merge request gitlab-org/gitlab!30945

Switch Gitlab::JSON to JSON for helm3_client

Closes #216365

See merge request gitlab-org/gitlab!30944

If the sidebar Ajax request finishes after loading the Ajax request for
a specific issue, it will clear the assignee, leading to the test
failure. We work around this issue by waiting for the initial request to
be done.

https://gitlab.com/gitlab-org/gitlab/-/issues/216364

Update re2 gem to v1.2.0

See merge request gitlab-org/gitlab!30942

Closes https://gitlab.com/gitlab-org/gitlab/-/issues/216365

The latest re2 library released on Homebrew does not compile with this
gem: https://github.com/mudge/re2/issues/40. Update this gem to make
that work.

Merge branch '216349-update-tests-metadata-uninitialized-constant-gitlab-in-rspec_flaky-report' into 'master'

Fix error when running update-tests-metadata in master

Closes #216349

See merge request gitlab-org/gitlab!30940

We can't use Gitlab::Json here because this is a standalone Ruby script
and we don't load the Rails environment.

We fixed the same problem in https://gitlab.com/gitlab-org/gitlab/-/merge_requests/30937
but we missed another instance of the same problem

Fix update-tests-metadata CI step failing in master

Closes #216349

See merge request gitlab-org/gitlab!30937

https://gitlab.com/gitlab-org/gitlab/-/merge_requests/30627 changed
`JSON.parse` to `Gitlab::JSON.parse`, but the latter isn't available in
the simple CI script since it doesn't load a Rails environment.

Closes https://gitlab.com/gitlab-org/gitlab/-/issues/216349

Revert CODEOWNERS validation of Web requests in diff check

See merge request gitlab-org/gitlab!30936

This reverts commit 4d73ef61.

This was causing merges to fail when groups were used in CODEOWNERS:
https://gitlab.com/gitlab-org/gitlab/-/issues/216345.

Seed metrics dashboard with example heatmap charts

See merge request gitlab-org/gitlab!29323

Update CI to test with Ruby v2.6.6

See merge request gitlab-org/gitlab!30909

Part of https://gitlab.com/gitlab-org/gitlab/-/issues/198579

Remove metrics_dashboard_visibility_switching_available feature flag

See merge request gitlab-org/gitlab!29718

Move Milestone methods to Timebox

See merge request gitlab-org/gitlab!30128

Introduce `skip_live_env` RSpec meta and add it to tests

Closes gitlab-org/quality/team-tasks#493

See merge request gitlab-org/gitlab!30661

Add check for new email addition in audit test

Closes #207741

See merge request gitlab-org/gitlab!30679

Gitlab/Json cop autocorrects in /lib

See merge request gitlab-org/gitlab!30627

Dequarantine Burndown chart spec

See merge request gitlab-org/gitlab!30871

Add import/export information to dev docs

See merge request gitlab-org/gitlab!29820

Move all methods Milestone and Sprint will share to Timebox

Dequarantine create snippet spec

Closes #215031

See merge request gitlab-org/gitlab!30862

Spec passed on staging

Improve Jenkins integration docs

See merge request gitlab-org/gitlab!30577

Fix markdown preview styling for dark theme

See merge request gitlab-org/gitlab!30477

Added json index action to cluster controller

Closes #207031

See merge request gitlab-org/gitlab!30635

Multiple metrics edit navigates to prom edit page

See merge request gitlab-org/gitlab!30666

Log Puma timeouts for API calls

See merge request gitlab-org/gitlab!30885

Adds the detailed alert skeleton for alert management

See merge request gitlab-org/gitlab!30804

* Adds mock data