Bump FakeItEasy from 8.3.0 to 9.0.1 #838

Job	Run time
init / run	19s
build-test-pack (Core) / run	1m 29s
build-test-pack (AutoFakeItEasy) / run	1m 22s
build-test-pack (AutoMoq) / run	1m 48s
build-test-pack (AutoNSubstitute) / run	1m 37s
publish	0s
tag	0s
	6m 35s

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