Merge branch '12774-spec-failure-in-ee-spec-services-ee-notification_service_spec-rb-345' into 'master'

Resolve "Spec failure in ee/spec/services/ee/notification_service_spec.rb:345"

Closes #12774

See merge request gitlab-org/gitlab-ee!14653

Update dependency @gitlab/ui to ^5.6.0

See merge request gitlab-org/gitlab-ce!30544

Shorten test description

See merge request gitlab-org/gitlab-ce!30638

Explicitly create resources via the API

See merge request gitlab-org/gitlab-ce!30639

Explicitly create resource via browser ui

See merge request gitlab-org/gitlab-ce!30640

CE backport for Dismissal Reasons

See merge request gitlab-org/gitlab-ce!29422

Allows any user to comment on a dismissed vulnerability (Dismissal reason: Step 3)

Closes #10364

See merge request gitlab-org/gitlab-ee!12067

- Adds actions/mutations for commenting on a dismissed vulnerability in
the group security dashboard.
- Adds the same actions to the security reports
- Displays the comment box on a dismissed comment
- Sets the dismissal modal in the correct state when the comment box is
focused
- Adds snowplow tracking for dismissal comments

Once a vulnerability has been dismissed, anyone can now comment on it to
explain the dismissal reason.

Set modal header/title size to match design spec

See merge request gitlab-org/gitlab-ce!30420

Apply modal border-radius only to direct children

See merge request gitlab-org/gitlab-ce!30645

Move EE differences for `app/views/projects/tree/_tree_content.html.haml`

Closes gitlab-ee#12557

See merge request gitlab-org/gitlab-ce!30455

Reuses existing TreeHelper instead of creating a new one just for one
method.

EE: Move EE differences for `app/views/projects/tree/_tree_content.html.haml`

See merge request gitlab-org/gitlab-ee!14590

Create an EE::TreeHelper version
Add specs for the method

Clean up CI reports

See merge request gitlab-org/gitlab-ce!30272

Also, `SAST_CONFIDENCE_LEVEL` has been renamed in
https://gitlab.com/gitlab-org/security-products/sast/merge_requests/72

Fixes broken master

Add `db_spin` and refactor ChaosController

Closes #64425

See merge request gitlab-org/gitlab-ce!30559

Remove unused method

Closes #64388

See merge request gitlab-org/gitlab-ce!30576

Add end-to-end test for creating and editing issue comments

See merge request gitlab-org/gitlab-ce!30571

Add endpoint to move issues in boards

See merge request gitlab-org/gitlab-ce!30216

Display the amount for Hashed Storage migration/rollback correctly

Closes #63667

See merge request gitlab-org/gitlab-ce!29996

Remove Rails 4-specific code from `FromUnion.from_union`

Closes #51575

See merge request gitlab-org/gitlab-ce!30587

[EE] Remove Rails 4-specific code from `FromUnion.from_union`

See merge request gitlab-org/gitlab-ee!14637