Update thanos/objstore (#5729) #1469

Job	Run time
lint	18m 24s
build	4m 27s
test	17m 26s
integration-configs-db	2m 0s
integration (requires_docker)	4m 56s
integration (integration_alertmanager)	3m 56s
integration (integration_backward_compatibility)	7m 24s
integration (integration_memberlist)	7m 8s
integration (integration_querier)	12m 50s
integration (integration_ruler)	3m 34s
integration (integration_query_fuzz)	1m 46s
deploy_website	0s
deploy	0s
	1h 23m 51s

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