Follow up documentation for Merge Trains cancel when running

Closes #66616

See merge request gitlab-org/gitlab-ce!32218

CE backport for gitlab-org/gitlab-ee!15561 (Expose new GraphQL `event` field for `DesignType`)

See merge request gitlab-org/gitlab-ce!32249

Prevent empty external authorization classification labels from overriding default label

Closes #66617

See merge request gitlab-org/gitlab-ce!32517

Most of the project templates bundled with GitLab have an empty string
set for `external_authorization_classification_label` in their
`project.json`. When imported this overrides the default label set on
the instance, causing the label to appear empty.

This change sets empty labels to nil during import, allowing the
default label to override it and be applied to the project.

Revert "Merge branch '66596-allow-danger-to-be-run-locally' into 'master'"

See merge request gitlab-org/gitlab-ce!32741

Move monitoring dashboard_spec to Jest

Closes #66922

See merge request gitlab-org/gitlab-ce!32571

Resolve "estimate quick action does not produce correct time for 1mo"

See merge request gitlab-org/gitlab-ce!32165

CE port: Document SRV handling for DB load balancing

See merge request gitlab-org/gitlab-ce!32539

Document Spotbugs Java version

See merge request gitlab-org/gitlab-ce!32627

Merge browser performance testing docs together

See merge request gitlab-org/gitlab-ce!32693

This reverts merge request !32196

Break up Danger rules into local or CI only

See merge request gitlab-org/gitlab-ce!32196

Document our GraphQL Enum standards

See merge request gitlab-org/gitlab-ce!32678

https://gitlab.com/gitlab-org/gitlab-ce/issues/67012

Add docs required version for mirroring status

See merge request gitlab-org/gitlab-ce!32691

Change introduced style for better rendering

Closes #66309

See merge request gitlab-org/gitlab-ce!32690

Update Sidekiq in architecture diagram

See merge request gitlab-org/gitlab-ce!32673

Remove trailing whitespace from applications.md

See merge request gitlab-org/gitlab-ce!32726

Support adding and removing labels w/ push opts

Closes #5942

See merge request gitlab-org/gitlab-ce!31831

Update docs for cluster apps cert-manager

See merge request gitlab-org/gitlab-ce!32628

Update to use -e to pass environment

See merge request gitlab-org/gitlab-ce!32495

Convert a bunch of Danger rules so they can run
locally.

The benefit of running the danger_local Rake task
is that it displays some informational messages
for clarity and also exits with 1 if there's any
output.

This class encapsulates our use of the Danger gem.

Fixes pot failure

See merge request gitlab-org/gitlab-ce!32721

Also fixes duplicated entry

https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/15561
https://gitlab.com/gitlab-org/gitlab-ee/issues/12705
https://gitlab.com/gitlab-org/gitlab-ee/issues/13353

Update docs for database load balancing logs

See merge request gitlab-org/gitlab-ce!32535

The database load balancing docs had some mention of the logs that
needed to be updated, and the logs doc had an absolute link to
gitlab.com instead of a relative link to a markdown file.