add change log

Signed-off-by: bowenlan-amzn <[email protected]>

CHANGELOG.md

@@ -11,6 +11,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 - Make outbound side of transport protocol dependent ([#13293](https://github.com/opensearch-project/OpenSearch/pull/13293))
 - [Remote Store] Add dynamic cluster settings to set timeout for segments upload to Remote Store ([#13679](https://github.com/opensearch-project/OpenSearch/pull/13679))
 - [Remote Store] Upload translog checkpoint as object metadata to translog.tlog([#13637](https://github.com/opensearch-project/OpenSearch/pull/13637))
+- Support Dynamic Pruning in Cardinality Aggregation ([#13821](https://github.com/opensearch-project/OpenSearch/pull/13821))
 
 ### Dependencies
 - Bump `com.github.spullara.mustache.java:compiler` from 0.9.10 to 0.9.13 ([#13329](https://github.com/opensearch-project/OpenSearch/pull/13329), [#13559](https://github.com/opensearch-project/OpenSearch/pull/13559))