Deprecation Announcement - Use non-root user by default in Secret Detection analyzer

upstream mr title: Deprecation Announcement - Use non-root user by default in Secret Detection analyzer

upstream mr link: https://gitlab.com/gitlab-org/gitlab/-/merge_requests/178312

upstream mr target branch: master

upstream mr milestone: 17.9

upstream mr merged at: 2025-01-28 09:01:16 +0800