Skip multiple SAST bot comment for regex and CI rule

Closes gitlab-com/gl-security/product-security/appsec/sast-custom-rules#57

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/174268



Merged-by: Tetiana Chupryna <tchupryna@gitlab.com>
Approved-by: Zamir Martins <zfilho@gitlab.com>
Approved-by: Ameya Darshan <adarshan@gitlab.com>
Approved-by: Tetiana Chupryna <tchupryna@gitlab.com>
Reviewed-by: Zamir Martins <zfilho@gitlab.com>
Co-authored-by: unset <fveillette@gitlab.com>