Prepare 1.19.0-rc.0 #11072

Job	Run time
lint	4m 37s
test	16m 6s
build	4m 22s
CodeQL	7m 23s
test-no-race	7m 32s
integration-configs-db	3m 5s
integration (requires_docker)	7m 4s
integration (integration_alertmanager)	4m 0s
integration (integration_backward_compatibility)	10m 59s
integration (integration_memberlist)	7m 40s
integration (integration_querier)	15m 10s
integration (integration_ruler)	5m 52s
integration (integration_query_fuzz)	5m 5s
deploy_website	0s
deploy	0s
	1h 38m 55s

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