Relaxing float comparison on fuzz testing #10404

Job	Run time
test	15m 37s
lint	4m 19s
CodeQL	6m 31s
build	3m 59s
integration-configs-db	2m 40s
integration (requires_docker)	7m 13s
integration (integration_alertmanager)	4m 9s
integration (integration_backward_compatibility)	10m 44s
integration (integration_memberlist)	7m 24s
integration (integration_querier)	15m 27s
integration (integration_ruler)	5m 45s
integration (integration_query_fuzz)	4m 28s
deploy_website	0s
deploy	0s
	1h 28m 16s

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