www/gitlab: security and patch update to 17.6.2

Changes: https://about.gitlab.com/releases/2024/12/11/patch-release-gitlab-17-6-2-released/
Security: 275ac414-b847-11ef-9877-2cf05da270f3
(cherry picked from commit 5caa3dc419941889efd9b5f64d5884cbfd2a3e31)