AWSShellScript: Keep original color when logging

**Is your feature request related to a problem? Please describe.**

In my Azure DevOps pipeline I run cdk diff command from the AWSShellScript task, unfortunately the output is not keeping the original colors of the formatted text I can see running the command from my own workstation.

**Describe the solution you'd like**

I'd like to be able to see the output from the command colored also when running the command from Azure Pipeline

**Describe alternatives you've considered**

**Additional context**

Having the output colored would really semplify the review of the stack (at a later stage the pipeline request for an approval before the cdk deploy command).

No file or test is named. Start at the AWSShellScript task entry point and run a cdk diff command in an Azure DevOps pipeline while tracing how its output is handled; done means the pipeline logs retain the command's original colors.

Written by the indexing model from the issue text.