Update CHANGELOG for backport of #17295

Signed-off-by: Divyansh Pandey <dpaandey@amazon.com>

CHANGELOG.md

@@ -6,7 +6,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 ## [Unreleased 2.x]
 ### Added
 - Improve performace of NumericTermAggregation by avoiding unnecessary sorting([#17252](https://github.com/opensearch-project/OpenSearch/pull/17252))
-
+- Add cluster and index level settings to limit the total primary shards per node and per index ([#17295](https://github.com/opensearch-project/OpenSearch/pull/17295))
 ### Dependencies
 - Bump `dnsjava:dnsjava` from 3.6.2 to 3.6.3 ([#17231](https://github.com/opensearch-project/OpenSearch/pull/17231))
 - Bump `com.google.code.gson:gson` from 2.11.0 to 2.12.1 ([#17229](https://github.com/opensearch-project/OpenSearch/pull/17229))