extra url for the image downloads (#550)

I added 2 extra urls as customers were seeing these locations where
downloads of the Terraform Enterprise image were coming from

Author: nikolasrieble

content/terraform-enterprise/v202506-1/docs/enterprise/deploy/configuration/network.mdx

@@ -110,6 +110,8 @@ To run Terraform Enterprise in an airgapped environment, you must also whitelist
 - `s3-r-w.us-west-2.amazonaws.com`
 - `s3-r-w.eu-central-1.amazonaws.com`
 - `s3-r-w.eu-west-1.amazonaws.com`
+- `prod-us-east-1-starport-layer-bucket.s3.dualstack.us-east-1.amazonaws.com`
+- `prod-us-west-1-starport-layer-bucket.s3.dualstack.us-west-1.amazonaws.com`
 
 Note that the domains are owned by Amazon, not HashiCorp, and may change at any time. Refer to this documentation to verify the domains each time you run the deployment configuration.