Trigger deploys to release-environments on stable branches

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/117212



Merged-by: Mayra Cabrera <mcabrera@gitlab.com>
Approved-by: Jennifer Li <jli@gitlab.com>
Approved-by: Mayra Cabrera <mcabrera@gitlab.com>
Co-authored-by: Graeme Gillies <ggillies@gitlab.com>