[BUG] StepFunction ExecutionFailed due to Unable to assume the service linked role

## Describe the bug

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A clear and concise description of what the bug is.
Seeing following error in StepFunction while creating new bot.

`{
"cause": "Unable to assume the service linked role. Please verify that the ECS service linked role exists. (Service: AmazonECS; Status Code: 400; Error Code: InvalidParameterException; Request ID: 38946c1a-7c0d-400d-a17c-61ec64104012; Proxy: null)",
"error": "ECS.InvalidParameterException"
}`

## To Reproduce

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Steps to reproduce the behavior:

1. Deploy solution to a new AWS Account
2. Create new bot

## Screenshots

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## Additional context

Add any other context about the problem here.
Issue following command and redirve the step function can resolve the issue and create a new bot properly.

`aws iam create-service-linked-role --aws-service-name ecs.amazonaws.com`