ci: use new `--use-local-cdk` method for testing connectors #135

Job	Run time
Get Changes	3s
Check: 'source-faker' (skip=false)	3m 9s
Check: 'source-shopify' (skip=false)	35m 36s
Check: 'source-s3' (skip=true)	3s
Check: 'destination-pinecone' (skip=true)	1s
Check: 'destination-motherduck' (skip=true)	2s
	38m 54s

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