Fix discussion entity for legacy diff notes

Closes #48474

See merge request gitlab-org/gitlab-ce!20214

i18n: externalize strings from 'app/views/projects/snippets'

See merge request gitlab-org/gitlab-ce!19828

Enable frozen string in apps/uploaders/*.rb

See merge request gitlab-org/gitlab-ce!20382

Refactor the review-docs workflow

See merge request gitlab-org/gitlab-ce!20365

Remove unneeded changelog

See merge request gitlab-org/gitlab-ce!20396

Remove unnecessary ignore for Gitaly N+1

Closes #47594

See merge request gitlab-org/gitlab-ce!20393

The changelog of
https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/18027
was in the wrong location.

[ci skip]

Resolve "QA: Merge request squash sometimes fail"

Closes #48779

See merge request gitlab-org/gitlab-ce!20375

[ci skip]

Close revoke deploy token modal on escape keypress

See merge request gitlab-org/gitlab-ce!20347

Add `environment` drop down to Metrics dashboard

Closes #45738

See merge request gitlab-org/gitlab-ce!19833

Port of EE refactoring to extract EE lines from boards

See merge request gitlab-org/gitlab-ce!19486

Partially addresses #47424.

Update OmniAuth Shibboleth gem to latest

See merge request gitlab-org/gitlab-ce!20354

Resolve "Failing ESLint on master"

Closes #48853

See merge request gitlab-org/gitlab-ce!20384

Enable Capybara/FeatureMethods cop

See merge request gitlab-org/gitlab-ce!20383

[QA] Ensure we wait for the squash checbox to be clickable before clicking it in the squash scenario
Signed-off-by: Rémy Coutable <remy@rymai.me>

fix failing spec test in gcp_spec

Closes #48855

See merge request gitlab-org/gitlab-ce!20386

Update the cloud-native trigger call in the UI

Closes charts/gitlab#565

See merge request gitlab-org/gitlab-ce!20340

for handling multi-valued SAML assertions. Add documentation
of label argument for omniauth provider to override text
in login button.

Resolve "Add Metrics to Operations Tab"

Closes #45739

See merge request gitlab-org/gitlab-ce!20025

Add option to add README when creating a project

Closes #19468

See merge request gitlab-org/gitlab-ce!20335

Backport of EE changes: Allow Labels::FindOrCreateService to find ancestor group labels

Closes #4266

See merge request gitlab-org/gitlab-ce!20364

This was because we were creating projects unnecessarily. These should be set as
the `source` for the notification setting, not the `project`!

We don't need to know the details of every library involved in these calls; they
will always originate in the GitLab app itself.

Resolve "Change new cluster page design to use tabs"

Closes #43446 and #46304

See merge request gitlab-org/gitlab-ce!18963

Fix 'only' regex for the review-docs job

See merge request gitlab-org/gitlab-ce!20367

Enable frozen string in apps/validators/*.rb

See merge request gitlab-org/gitlab-ce!20220