Add sticky confidential issue bar

Closes #29741

See merge request !11952

Backport from EE: Fix '/unassign' slash command

See merge request !11926

Fix backup task to continue on corrupt repositories

Closes #31767

See merge request !11962

Sync email address from specified omniauth provider

See merge request !11268

Perform filtered search when state tab is changed

Closes #27261

See merge request !11917

Fix tooltip on pipelines page not updating

Closes #33272

See merge request !11960

Update testing.md `# Frontend Testing` to include integration spec for edge cases

See merge request !11784

Fix memoization in ContributionsCalendar#activity_dates

See merge request !11973

Re-enable Gitaly commit_raw_diffs migration

See merge request !11970

Fix NPE with horse racing emoji check

Closes #32587

See merge request !11872

Expand/collapse close & backlog lists in issue boards

Closes #23917

See merge request !11820

Use key? instead of has_key?

See merge request !11971

Backport settings.scss bug fix from EE branch

See merge request !11969

Implement ability to update deploy keys

Closes #3191

See merge request !10383

Use Gitaly 0.11.0

See merge request !11966

This doesn't appear to be actually called twice, but having it appear to work
but not would be a problem if it was.

Avoid repeated queries for pipeline builds on merge requests

See merge request !11888

Fix Diff::Position#diff_file for positions on straight diffs

See merge request !11947

Persist stages in the database

Closes #26481

See merge request !11790

Migrate pipeline stages in the database

See merge request !11714

Add more info about private Docker registry

Closes #4028

See merge request !11945

Add more info on artifacts expiry date

Closes #18694

See merge request !11942

Add Prometheus metrics endpoint and basic infrastructure to meter code

See merge request !11553