Merge branch 'rails5-update-rouge' into 'master'

Rails5: update Rails5 lock for forgotten gem rouge

See merge request gitlab-org/gitlab-ce!21010

Gemfile.rails5.lock

@@ -754,7 +754,7 @@ GEM
     retriable (3.1.1)
     rinku (2.0.0)
     rotp (2.1.2)
-    rouge (3.1.1)
+    rouge (3.2.0)
     rqrcode (0.7.0)
       chunky_png
     rqrcode-rails3 (0.1.7)

changelogs/unreleased/rails5-update-rouge.yml

+---
+title: 'Rails5: update Rails5 lock for forgotten gem rouge'
+merge_request: 21010
+author: Jasper Maes
+type: fixed