Notice the dependencies for AWS.Cryptography.EncryptionSDK below; DafnyRuntime 4.9.0 is required as well as AWS.Cryptography.MaterialProvider 1.7.6:

If you look into the required dependencies for AWS.Cryptography.MaterialProvider 1.7.6, it requires DafnyRuntime 4.2.0-4.8.0. This results in conflicts in versions, which results in build warnings (or errors, if set).
