www/gitlab: fix regressions caused by puma upgrade

This fixes following commits:
99b692d10ed32c6a02eaaa3727400379d4692aa6
0f92b5ebfd3b3336f58a715ecf171f7e716788d5
074a308471c1dc05251985907e260a632141c3b3

PR: 289973
(cherry picked from commit a23cee176f7b174d32c095b6aa1b68062e5c431e)