Add latest changes from gitlab-org/gitlab@12-6-stable-ee

CHANGELOG-EE.md

 Please view this file on the master branch, on stable branches it's out of date.
+## 12.6.2
+
+### Security (2 changes)
+
+- Don't publish drafts if user can't create notes.
+- Remove protected tag access when group is removed.
+
+
 ## 12.6.1
 - No changes.

VERSION

-12.6.2
+12.6.2-ee