This cleans up any pending MigrateMergeRequestDiffCommitUsers migration
jobs. In addition, we stop using the old columns, ignore them, and
remove them in a post-deployment migration.

We don't need a separate release for the removal of the columns, as
ignoring them in the deploy ensures it's safe to remove the columns in a
post-deployment migration. In addition, the code has supported reading
from/writing to the new data for the last two or so months.

With this change we should start seeing less growth in the
merge_request_diff_commits table, as we no longer store many duplicate
names and Emails. Once we find a way to reclaim unused space in the
table, we should be able to free up roughly 500 GB of disk space as
mentioned in the original issue
(https://gitlab.com/gitlab-org/gitlab/-/issues/331823).

Changelog: added

Update wording for group transfer path error

See merge request gitlab-org/gitlab!72863

Remove deprecated fullPath arguments from frontend DAST mutations

See merge request gitlab-org/gitlab!72690

Move DAST CI Job keys to the EE Variant

See merge request gitlab-org/gitlab!72829

Extend deduplication strategy to ensure the latest result in race conditions

See merge request gitlab-org/gitlab!71979

Update docs to match text in approval settings

See merge request gitlab-org/gitlab!72851

Add new group vulnerability report and vulnerability counts components

See merge request gitlab-org/gitlab!72434

Create single section for UsageAPI docs

See merge request gitlab-org/gitlab!72871

Resolve "support all options from `docker-compose.yml` in gitlab runner services"

See merge request gitlab-org/gitlab!72025

Update Perforce Helix subheading to not use 'via'

See merge request gitlab-org/gitlab!72815

Tracking for hand raise lead modal

See merge request gitlab-org/gitlab!72725

Remove compliance framework section on project settings and compliance badge for unlicensed EE

See merge request gitlab-org/gitlab!72691

Fix emojis paths

See merge request gitlab-org/gitlab!72887

Document concerns when including remote CI configs

See merge request gitlab-org/gitlab!72789

Update compliance drawer spec with shared constant

See merge request gitlab-org/gitlab!72515

Update emojis paths in the docs to account for the older paths removal.

Set values for StandardContext in Frontend

See merge request gitlab-org/gitlab!72660

Check invalid indexes in add_concurrent_index

See merge request gitlab-org/gitlab!71761

Fix depreciated GLIcon size and property

See merge request gitlab-org/gitlab!72502

Exclude ProjectNamespace from Namespace fetches in namespaces REST API

See merge request gitlab-org/gitlab!71987

Fixes responsive actions being visible when they shouldn't

See merge request gitlab-org/gitlab!72797

Before silently skipping index creation in `add_concurrent_index`, check
if the existing index is INVALID. If so, we should drop and re-add the
index since the existing index can't be used.

Fix `scripts/security-harness` to support older git versions

See merge request gitlab-org/gitlab!72695

Restore Gitaly server update and fix cached Git binary

See merge request gitlab-org/gitlab!72839

Add allowlists for various scopes

See merge request gitlab-org/gitlab!72855

Fix unnecessary epics fetch request on Roadmap with no filter token value

See merge request gitlab-org/gitlab!72774

Stop overriding spamcheck verdicts !=ALLOW to allow rescuing via reCAPTCHA.

See merge request gitlab-org/gitlab!71496

Consolidate constants for external issues

See merge request gitlab-org/gitlab!72751

Fix name of puma's example config file in README.md

See merge request gitlab-org/gitlab!71490

Fix: Buttons text update with proper capitalization

See merge request gitlab-org/gitlab!72650