Add changelog

Signed-off-by: Justin Jung <[email protected]>

Author: justinjung04

CHANGELOG.md

@@ -33,6 +33,7 @@
 * [BUGFIX] Ring: Add JOINING state to read operation. #5346
 * [BUGFIX] Compactor: Partial block with only visit marker should be deleted even there is no deletion marker. #5342
 * [BUGFIX] KV: Etcd calls will no longer block indefinitely and will now time out after the DialTimeout period. #5392
+* [BUGFIX] Store Gateway: Apply WaitStabilityMinDuration when syncing blocks #5406
 
 ## 1.15.1 2023-04-26