Allow artifacts from Application Security Testing template to be downloaded

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/192459



Merged-by: Avielle Wolfe <awolfe@gitlab.com>
Approved-by: Meir Benayoun <mbenayoun@gitlab.com>
Approved-by: Olivier Gonzalez <ogonzalez@gitlab.com>
Approved-by: Allison Browne <abrowne@gitlab.com>
Approved-by: Avielle Wolfe <awolfe@gitlab.com>
Reviewed-by: Olivier Gonzalez <ogonzalez@gitlab.com>
Reviewed-by: Meir Benayoun <mbenayoun@gitlab.com>
Co-authored-by: Thiago Figueiró <tfigueiro@gitlab.com>