ci: revamp workflows #35

Job	Run time
Run tests / Validate SAM templates	27s
Run tests / Lint Go	54s
Run tests / Run Go tests	46s
Upload SAM assets / Check permissions	2s
Upload SAM assets / Package and upload SAM apps	1m 8s
Run integration tests / provision	14s
Run integration tests / discover	5s
Run integration tests / tests (config)	2m 35s
Run integration tests / tests (configsubscription)	2m 57s
Run integration tests / tests (firehose)	6m 33s
Run integration tests / tests (forwarder)	5m 41s
Run integration tests / tests (forwarder_s3)	4m 17s
Run integration tests / tests (logwriter)	5m 54s
Run integration tests / tests (metricstream)	3m 47s
Run integration tests / tests (simple)	37s
Run integration tests / tests (stack)	8m 38s
Run integration tests / cleanup	3s
	44m 38s

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