Fix an epics+nested groups spec on mysql

Closes #11904

See merge request gitlab-org/gitlab-ee!13896

Resolve "Remove unused `users.support_bot`"

Closes #11130

See merge request gitlab-org/gitlab-ee!12620

Rename boards spec name

See merge request gitlab-org/gitlab-ee!13725

Fix search dropdown not closing on blur if empty

Closes #53741

See merge request gitlab-org/gitlab-ce!28730

Fix search dropdown not closing on blur if empty

See merge request gitlab-org/gitlab-ee!13318

Fix style-lint errors and warnings for `app/assets/stylesheets/framework/forms.scss`

Closes #59854

See merge request gitlab-org/gitlab-ce!28129

EE Port: Fix style-lint errors and warnings for `app/assets/stylesheets/framework/forms.scss`

See merge request gitlab-org/gitlab-ee!12401

Backport to add fields to IssueType

See merge request gitlab-org/gitlab-ce!28998

Add support for querying epics with GraphQL

Closes #10795

See merge request gitlab-org/gitlab-ee!13248

wrapped into a Group query

Remove delta island feature flag

Closes gitaly#1575

See merge request gitlab-org/gitlab-ce!28871

Delta islands were implemented last released in:
https://gitlab.com/gitlab-org/gitaly/merge_requests/1110. It's been
enabled on production and works as expected.

CE: Resolve EE differences in search/_results.html.haml

See merge request gitlab-org/gitlab-ce!28952

Resolve EE differences in search/_results.html.haml

Closes #11041

See merge request gitlab-org/gitlab-ee!13720

Remove unused avatar sizes

Closes #62429

See merge request gitlab-org/gitlab-ce!28947

Remove fixed height from MR diff headers

Closes #62596

See merge request gitlab-org/gitlab-ce!28946

Style gitlab-ui checkboxes

See merge request gitlab-org/gitlab-ce!28622

Resolve "Relative links in Vulnerability modal not clickable"

Closes #9283

See merge request gitlab-org/gitlab-ee!9767

Docs: Fix typos

See merge request gitlab-org/gitlab-ce!29020

Fix typo in multiple_assignees_for_issues.md

See merge request gitlab-org/gitlab-ce!29002

Bump concurrent-ruby and concurrent-ruby-ext to 1.1.5

See merge request gitlab-org/gitlab-ce!29015

Document the Admin Area's *Runners* page

See merge request gitlab-org/gitlab-ce!28852

Docs feedback: Redis Troubleshooting Replication

Closes #60782

See merge request gitlab-org/gitlab-ce!28936

This matches the version used in Gitaly and avoids potential
version conflicts when multiple versions are installed.

Regenerate locale/gitlab.pot to remove unneeded text

See merge request gitlab-org/gitlab-ee!13851