Remove deprecated `code_owner` references from ApprovalMergeRequestRule

Closes #230843

See merge request gitlab-org/gitlab!37260

:code_owner was marked as ready for deprecation over a year ago
(https://gitlab.com/gitlab-org/gitlab/-/issues/11834)

Update rules for empty branches

See merge request gitlab-org/gitlab!37901

Add details on how to skip pipelines when a
branch is empty, and crosslink between workflow
and regular rules. Also expands rules examples into
a new linkable section

Remove word "new" from security summary message on MR page

See merge request gitlab-org/gitlab!38043

Update Expand button

Closes #219806

See merge request gitlab-org/gitlab!36625

MR: https://gitlab.com/gitlab-org/gitlab/-/merge_requests/36625

Update Gitaly version

See merge request gitlab-org/gitlab!38248

Create issue automatically from Prometheus alert

Closes #231497

See merge request gitlab-org/gitlab!37884

fix projects typo

See merge request gitlab-org/gitlab!38246

- Prevent extra SQL query
- Fix spelling error

Ignore files resulting from migrations 2017 and older

See merge request gitlab-org/gitlab!38244

Such migrations are likely from the following commits:

* bac4d96d
* 381b7065
* cfae6ec2
* 763f9ee5
* e3f4377c

Geo - Remove the unused Geo::Fdw::GeoNode#project_registries method

See merge request gitlab-org/gitlab!38206

Improve error messages when adding a child epic and it fails

See merge request gitlab-org/gitlab!30932

Removes the DB_USE_NEW_POOL_SIZE_LOGIC flag

See merge request gitlab-org/gitlab!38049

Ignore previously deleted migrations

See merge request gitlab-org/gitlab!38241

Rather than asking each contributor to sort out un-tracked files, we
ignore the db/schema_migrations for previously deleted migrations

Add missing fa-share icon

See merge request gitlab-org/gitlab!38235

Remove inline location-dot icon from docs

See merge request gitlab-org/gitlab!38236

Create event dictionary

Closes gitlab-org/growth/team-tasks#174

See merge request gitlab-org/gitlab!38140

Update UI help links after splitting page

Closes #218985

See merge request gitlab-org/gitlab!38103

After the Prometheus integration page was split apart, there were
multiple tendrils of help links that needed updating.

Replace prepend-left-64 class

See merge request gitlab-org/gitlab!36142

Additional documentation for CI_SEED_CORPUS (coverage fuzzing)

See merge request gitlab-org/gitlab!38186

Update GitLab UI/SVG

See merge request gitlab-org/gitlab!38191

Docs: Add redirect for obsolete explore-gitlab university page

See merge request gitlab-org/gitlab!38224

Remove again GitlabIssueTrackerService records

See merge request gitlab-org/gitlab!37931

Add confidential attr to API for notes update

See merge request gitlab-org/gitlab!37932

Add confidential attr to graphQL for notes update

See merge request gitlab-org/gitlab!37920

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