Update CHANGELOG.md for ZSTD version bump.

Signed-off-by: Mulugeta Mammo <[email protected]>

Author: mulugetam

CHANGELOG.md

@@ -23,6 +23,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 - Bump `org.jruby.joni:joni` from 2.2.3 to 2.2.5 ([#17608](https://github.com/opensearch-project/OpenSearch/pull/17608))
 - Bump `dangoslen/dependabot-changelog-helper` from 3 to 4 ([#17498](https://github.com/opensearch-project/OpenSearch/pull/17498))
 - Bump `com.google.api:gax` from 2.35.0 to 2.63.1 ([#17465](https://github.com/opensearch-project/OpenSearch/pull/17465))
+- Bump `com.github.luben:zstd-jni` from 1.5.5-1 to 1.5.6-1 ([#17674](https://github.com/opensearch-project/OpenSearch/pull/17674))
 
 ### Changed