Security Command Center Risk Engine uses the storage.restrictAuthTypes

## Change Change Security Command Center [Risk Engine](https://cloud.google.com/security-command-center/docs/attack-exposure-supported-features)uses the [storage.restrictAuthTypes](https://cloud.google.com/storage/docs/org-policy-constraints#restrict-auth-types)organization policy constraint to determine whether Cloud Storage buckets are reachable using [signed URLs](https://cloud.google.com/storage/docs/access-control/signed-urls).