www/gitlab-ce: security update to 15.10.5

Changelog:
https://about.gitlab.com/releases/2023/05/02/security-release-gitlab-15-11-1-released/

Security: 4ffcccae-e924-11ed-9c88-001b217b3468
(cherry picked from commit 6ffe3cae0f83a513ca9211fa59310605b60d2b4a)