www/gitlab: security and patch update to 19.1.2
Changes: https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-1-2-released/
Security: 84ce0c0c-7b4e-11f1-9c40-2cf05da270f3
(cherry picked from commit f62f90d1a8ef5ca1cadb58263f2d6947aa507983)