Merge branch 'security-fix-k8s-uid-gid-root-bypass' into 'main'

See merge request !6643



Merged-by: Axel von Bertoldi <avonbertoldi@gitlab.com>
Approved-by: Axel von Bertoldi <avonbertoldi@gitlab.com>
Reviewed-by: GitLab Duo <gitlab-duo@gitlab.com>
Co-authored-by: Ashvin Sharma <ashsharma@gitlab.com>
(cherry picked from commit 9d1181ab)