test: verify CI output comparison diff #84

Job	Run time
root-tests (18.x)	34s
smoke-test (latest)	57s
lint (18.x)	35s
smoke-test (18.x)	55s
output-comparison	13m 54s
smoke-test (22.x)	52s
build-and-test (18.x, assertion-monitor)	43s
build-and-test (18.x, utils)	40s
build-and-test (18.x, retryable-monitor)	40s
build-and-test (18.x, batch-poster-monitor)	44s
	20m 34s

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