Moving changelog entry to unreleased 2.x

Signed-off-by: Joshua Palis <jpalis@amazon.com>

CHANGELOG.md

@@ -49,7 +49,6 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 - 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))
 - Require MediaType in Strings.toString API ([#6009](https://github.com/opensearch-project/OpenSearch/pull/6009))
-- Changing ExtensionActionRequest streaminput constructor to be public ([#6094](https://github.com/opensearch-project/OpenSearch/pull/6094))
 
 ### Deprecated
 
@@ -85,6 +84,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 - Replace latches with CompletableFutures for extensions ([#5646](https://github.com/opensearch-project/OpenSearch/pull/5646))
 - Add GeoTile and GeoHash Grid aggregations on GeoShapes. ([#5589](https://github.com/opensearch-project/OpenSearch/pull/5589))
 - Add support to disallow search request with preference parameter with strict weighted shard routing([#5874](https://github.com/opensearch-project/OpenSearch/pull/5874))
+- Changing ExtensionActionRequest streaminput constructor to be public ([#6094](https://github.com/opensearch-project/OpenSearch/pull/6094))
 
 ### Dependencies
 - Update nebula-publishing-plugin to 19.2.0 ([#5704](https://github.com/opensearch-project/OpenSearch/pull/5704))