feat: Support LocalStack #305

Job	Run time
build / lint & typecheck	57s
build / build	52s
test-localstack / test-cdk-basic	2m 3s
test-localstack / test-sls-basic	2m 33s
test-localstack / test-sam-basic	8m 27s
test-localstack / test-terraform-basic	2m 34s
	17m 26s

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