ECS Cluster ASG drain hook uses deprecated Python 3.9 runtime

[naqqash-khan-audi]

The ECS Cluster Auto Scaling Group (ASG) drain hook defined in instance-drain-hook.ts currently uses the Python 3.9 runtime.

https://github.com/aws/aws-cdk/blob/v1-main/packages/%40aws-cdk/aws-ecs/lib/drain-hook/instance-drain-hook.ts#L70

However, AWS has announced that Python 3.9 will soon be deprecated and no longer supported in Lambda. To ensure future compatibility and avoid potential disruptions, this runtime should be updated to a supported version.

Thank you,
Naqqash Khan