receive: do not leak grpc connections #13095

Job	Run time
Linters (Static Analysis) for Go	2m 50s
Linters (Static Analysis) for Go	2m 50s
Thanos end-to-end tests (8, 0)	5m 8s
Thanos end-to-end tests (8, 0)	5m 8s
Go build for different platforms	7m 57s
Go build for different platforms	7m 57s
Thanos end-to-end tests (8, 1)	4m 6s
Thanos end-to-end tests (8, 1)	4m 6s
Thanos end-to-end tests (8, 2)	4m 21s
Thanos end-to-end tests (8, 2)	4m 21s
Thanos end-to-end tests (8, 3)	4m 56s
Thanos end-to-end tests (8, 3)	4m 56s
Thanos end-to-end tests (8, 4)	7m 41s
Thanos end-to-end tests (8, 4)	8m 5s
Thanos end-to-end tests (8, 5)	4m 33s
Thanos end-to-end tests (8, 5)	4m 33s
Thanos end-to-end tests (8, 6)	4m 31s
Thanos end-to-end tests (8, 6)	4m 31s
Thanos end-to-end tests (8, 7)	4m 29s
Thanos end-to-end tests (8, 7)	4m 29s
	1h 41m 28s

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