Merge branch 'fix-changelog' into 'master'

Move CHANGELOG entries of !5361, !5451 and !5887 from 8.11 to 8.12

## What does this MR do?

Move CHANGELOG entries of !5361, !5451 and !5887 from 8.11 to 8.12

## Why was this MR needed?

They were wrongly added to 8.11 here:

- https://gitlab.com/gitlab-org/gitlab-ce/commit/220755f52ad6e3fdfa43c62e0a4a4051721246dc#note_14900001
- https://gitlab.com/gitlab-org/gitlab-ce/commit/87f93ceb9542c415d6c23c72ff93d63272107d54

See merge request !6189

CHANGELOG

@@ -38,6 +38,9 @@ v 8.12.0 (unreleased)
   - Fix groups sort dropdown alignment (ClemMakesApps)
   - Add horizontal scrolling to all sub-navs on mobile viewports (ClemMakesApps)
   - Use JavaScript tooltips for mentions !5301 (winniehell)
+  - Add hover state to todos !5361 (winniehell)
+  - Fix icon alignment of star and fork buttons !5451 (winniehell)
+  - Fix alignment of icon buttons !5887 (winniehell)
   - Fix markdown help references (ClemMakesApps)
   - Add last commit time to repo view (ClemMakesApps)
   - Fix accessibility and visibility of project list dropdown button !6140
@@ -185,9 +188,6 @@ v 8.11.0
   - Update `timeago` plugin to use multiple string/locale settings
   - Remove unused images (ClemMakesApps)
   - Get issue and merge request description templates from repositories
-  - Add hover state to todos !5361 (winniehell)
-  - Fix icon alignment of star and fork buttons !5451 (winniehell)
-  - Fix alignment of icon buttons !5887 (winniehell)
   - Enforce 2FA restrictions on API authentication endpoints !5820
   - Limit git rev-list output count to one in forced push check
   - Show deployment status on merge requests with external URLs