Update Thanos to 0.12.1
Update Thanos to 0.12.1

#2411 Query: fix a bug where queries might not time out sometimes due to issues with one or more StoreAPIs.
#2474 Store: fix a panic caused by concurrent memory access during block filtering.
#2472 Compact: fix a bug where partial blocks were never deleted, causing spam of warnings.
#2484 Query/Ruler: fix issue #2483, when web.route-prefix is set, it is added twice in HTTP router prefix.
lest/prometheus-rpm,lest/prometheus-rpm