Update changelog

Signed-off-by: Rishab Nahata <[email protected]>

CHANGELOG.md

@@ -55,6 +55,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 - Migrate client transports to Apache HttpClient / Core 5.x ([#4459](https://github.com/opensearch-project/OpenSearch/pull/4459))
 - Support remote translog transfer for request level durability([#4480](https://github.com/opensearch-project/OpenSearch/pull/4480))
 - Changed http code on create index API with bad input raising NotXContentException from 500 to 400 ([#4773](https://github.com/opensearch-project/OpenSearch/pull/4773))
+- Change http code for DecommissioningFailedException from 500 to 400 ([#5283](https://github.com/opensearch-project/OpenSearch/pull/5283))
 
 ### Deprecated
 
@@ -77,7 +78,6 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 - Fix 'org.apache.hc.core5.http.ParseException: Invalid protocol version' under JDK 16+ ([#4827](https://github.com/opensearch-project/OpenSearch/pull/4827))
 - Fixed compression support for h2c protocol ([#4944](https://github.com/opensearch-project/OpenSearch/pull/4944))
 - Reject bulk requests with invalid actions ([#5299](https://github.com/opensearch-project/OpenSearch/issues/5299))
-- Update Rest status for DecommissioningFailedException([#5283](https://github.com/opensearch-project/OpenSearch/pull/5283))
 
 ### Security