Use caching built into actions/setup-node@v2

[GaryGSC]

This was announced on GitHub's blog. Unfortunately, because our application code is in a subdirectory we can't use it quite yet.

At the moment, only lock files in the project root are supported.

So, this is a draft PR using the syntax described in the ADR, which will supposedly be implemented in the coming months.

[github-actions]

Terraform Plan:

will create 1 resource:

• local_file - appspec_json

will update 2 resources:

• aws_s3_bucket - my_s3_bucket_logs
• aws_lambda_function - test_lambda

will replace (delete then create) 1 resource:

• aws_ecs_task_definition - task_def

see details

[GaryGSC]

Dang. Clicked the green button before switching it to a draft PR and now I don't see an option to change it. Closing in favor of a new one.