CORS headers are now correctly returned for files hosted on the US region

The EU bucket was correctly configured. Only the US bucket needed a fix. Both buckets we use to store recordings have CORS enabled meaning that if you send in your GET request the Origin header, the S3 bucket will reply with the actual recording together with the following headers:

Access-Control-Allow-Origin: *
Access-Control-Allow-Methods: GET
Access-Control-Max-Age: 3000