AWS::S3::Bucket resource "UIBucket" policy does not Public ACLs

[AdrianBegg]

The AWS::S3::Bucket resource "UIBucket" in the CloudFormation template does not enable S3 Block Public Access and deploys the bucket with access control lists disabled (due to changes made to S3 defaults starting in April 2023). This causes An error occurred (AccessControlListNotSupported) when calling the PutObject operation: The bucket does not allow ACLs to be thrown if front-end components are deployed to the bucket with the grants --grants read=uri=http://acs.amazonaws.com/groups/global/AllUsers.

[deki]

Thanks for reporting this. As bucket policies are preferred over ACLs we should probably go with the solution proposed in #40.