Fixed unsupported dependency issues

[randheerrk]

We were trying to deploy the AWS services for ROS Bag image extraction using MWAA, as part of our Autonomous Vehicle Initiative at Thoughtworks.
We followed this as a reference.
But we have faced some challenges during the deployment, and would like to update the original repository with the solutions that we come up with.

Description of changes:

• Refactored Dockerfile
• Increased dag run timeout to 240 mins
• Created ECS execution role and added it to the fargate task definition
• Used python-snappy instead of snappy
• Updated awd cdk version to 1.189.0

Let me know if any modifications are needed

By submitting this pull request, I confirm that you can use, modify, copy, and redistribute this contribution, under the terms of your choice.

thanks
Randheer