Python images: Add builds using the AWS Common Runtime

The [CRT](https://docs.aws.amazon.com/sdkref/latest/guide/common-runtime.html) and `boto3[crt]` might improve performance of some projects.

Of course, `boto3[crt]` can be installed manually, or a custom image can be made that includes it, however it would be nice to have pre-built images that include this version of boto3 by default. This could be an opt-in by selecting e.g `python3.11-crt` as the runtime.