Could be deprecated due to `minified_json` attribute

Thanks a lot for creating this repo. It's been helpful to me.

See https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/iam_policy_document#minified_json

The data aws iam policy document has a built in way of minification now. This module is still needed for older terraform which may be stuck on old aws providers.