Enables tracking of security releases
What does this MR do?
Enables tracking of security releases by reverting 0bece901 since Omnibus security development has moved to GitLab Security from 12.9.
Example: https://gitlab.com/gitlab-org/security/omnibus-gitlab/-/issues/1 was included on https://gitlab.com/gitlab-org/gitlab/-/issues/209019. Related security merge requests were validated and merged by our release tooling.
Related to gitlab-com/gl-infra/delivery#692 (closed)