Introduce MergeRequest#merge_base_pipeline for CodeQuality artifact comparison to merged results

See merge request gitlab-org/gitlab!44648

Merge branch '267498-failed-test-qa-specs-features-browser_ui-1_manage-login-register_spec-rb-39-manage-standard' into 'master'

Redirect when no user is signed in when updating registration

See merge request gitlab-org/gitlab!45276

Release the merge request diff replication

See merge request gitlab-org/gitlab!45224

DRY api/users_spec deactivation tests

See merge request gitlab-org/gitlab!43904

Fix scoped label markdown padding

See merge request gitlab-org/gitlab!45153

Add Requirement description support

See merge request gitlab-org/gitlab!44902

This merge request allows a single backend feature flag to toggle the
base pipeline used for comparing CodeQuality artifacts in merge
requests between the MR diff base and the merge base from the target
branch.

Refers to the pipeline run on target_sha of actual_head_pipeline,
allowing us to compare the head_pipeline for the merged result of
an MR to the commit immediately prior to merging of new code.

Add substitution rule for GitLab Shell

See merge request gitlab-org/gitlab!45297

Add an error-level substitution rule to prevent users from writing
the product name as "GitLab-shell" - capitalization is already
handled in .markdownlint.json

Do not send import/export workers to dead queue

See merge request gitlab-org/gitlab!44810

Remove allowed to merge from code owner protection tooltip

See merge request gitlab-org/gitlab!45296

Merge branch '205422-changing-approval-rule-target-branch-should-not-affect-existing-merge-requests' into 'master'

Fixes a bug with merge request approval rules being changed after creation

See merge request gitlab-org/gitlab!43209

Merge branch '254823-automatically-expand-file-on-merge-request-with-changes-to-single-file' into 'master'

Automatically expand file on merge request with changes to single file

See merge request gitlab-org/gitlab!44629

Clarify after script details

See merge request gitlab-org/gitlab!45281

Fix deprecation.milestone for timeframe arguments

See merge request gitlab-org/gitlab!45228

Condensed integrations into alert integrations

See merge request gitlab-org/gitlab!45324

Updates to incident page docs

See merge request gitlab-org/gitlab!45322

Docs: Re-do of Incident management landing page

See merge request gitlab-org/gitlab!45333

Revert "Feature flag group_level_integrations default enabled"

See merge request gitlab-org/gitlab!45329

Note that Cost Management is for Ultimate

See merge request gitlab-org/gitlab!45317

Updates to alerts page in docs

See merge request gitlab-org/gitlab!45319

Rename image to include version number. Run through pngquant to
decrease the file size by .. a lot really.

Add vale rule for "admin" abbreviation

See merge request gitlab-org/gitlab!45240

[RUN AS-IF-FOSS] Remove `:incident_sla_dev` feature flag

See merge request gitlab-org/gitlab!45085

Add recursive approach for Namespace#all_projects

See merge request gitlab-org/gitlab!44740

Ignore scanned_resources_count on Security::Scan

See merge request gitlab-org/gitlab!44695

Search pypi packages by normalized name

See merge request gitlab-org/gitlab!44807

Tidy up some more spelling issues

See merge request gitlab-org/gitlab!45336

A few new exceptions to add to the list of words we'll allow.

[RUN AS-IF-FOSS] Expect "Issues > Iterations" only in EE

See merge request gitlab-org/gitlab!45325

Instrument metric: count of projects with active SLA countdown timer

See merge request gitlab-org/gitlab!45092