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* enhancement:``eks get-token``: Refactor ``get-token`` implementation and add support for non-aws partitions and regions.
* api-change:``chime``: Update chime command to latest version
* api-change:``appmesh``: Update appmesh command to latest version
* api-change:``gamelift``: Update gamelift command to latest version
* api-change:``sagemaker``: Update sagemaker command to latest version
* api-change:``ec2``: Update ec2 command to latest version
* enhancement:``sts``: Add support for configuring the use of regional STS endpoints.