Merge branch 'update_changelog' into '7-12-stable'

update changelog

See merge request !168

CHANGELOG

-v7.13.0
-  - Fix: No runner notification can see managers only
+v7.12.1
+  - Runner without tag should pick builds without tag only
+  - Explicit error in the GitLab when commit not found.
   - Fix: lint with relative subpath
-  - Update web hook example
+  - Update webhook example
   - Improved Lint stability
-  - Add one more validation rule for .gitlab-ci.yml
   - Add warning when .gitlab-ci.yml not found
-v7.12.1
-  - Runner without tag should pick builds without tag only
-  
+  - Add one more validation rule for .gitlab-ci.yml
 v7.12.0
   - Endless scroll on the dashboard
   - Add notification if there are no runners