Aws\Credentials- Adds hostname resolution for the EcsCredentialProvider.Aws\EC2- This release adds support for Security group referencing over Transit gateways, enabling you to simplify Security group management and control of instance-to-instance traffic across VPCs that are connected by Transit gateway.Aws\DocDB- Amazon DocumentDB updates for new cluster storage configuration: Amazon DocumentDB I/O-Optimized.Aws\CodeStarconnections- This release updates a few CodeStar Connections related APIs.