chore(deps): bump patrol from 3.19.0 to 4.0.0 in /example #760

Job	Run time
Run dart unit tests	48s
Run iOS native unit tests	1m 43s
Run Android native unit tests	12m 11s
Build iOS	-1s
Run iOS Integration Tests	-1s
Build Android	8m 12s
Run Android Integration Tests	8s
	23m 0s

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