Updating Changelog

Signed-off-by: Alan Protasio <[email protected]>

Author: alanprot

CHANGELOG.md

@@ -32,6 +32,7 @@
 * [BUGFIX] Distributor: fix issue causing distributors to not extend the replication set because of failing instances when zone-aware replication is enabled. #3977
 * [BUGFIX] Query-frontend: Fix issue where cached entry size keeps increasing when making tiny query repeatedly. #3968
 * [BUGFIX] Compactor: `-compactor.blocks-retention-period` now supports weeks (`w`) and years (`y`). #4027
+* [BUGFIX] Querier: returning 422 (instead of 500) when query hits `max_chunks_per_query` limit with block storage, when the limit is hit in the store-gateway. #3937
 
 ## Blocksconvert