Add to CHANGELOG

Signed-off-by: Craig Perkins <cwperx@amazon.com>

Author: cwperks

CHANGELOG.md

@@ -13,6 +13,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 - [Star Tree] Fix sub-aggregator casting for search with profile=true ([19652](https://github.com/opensearch-project/OpenSearch/pull/19652))
 - Fix bwc @timestamp upgrade issue by adding a version check on skip_list param ([19671](https://github.com/opensearch-project/OpenSearch/pull/19671))
 - [Java Agent] Allow JRT protocol URLs in protection domain extraction ([#19683](https://github.com/opensearch-project/OpenSearch/pull/19683))
+- Add S3Repository.LEGACY_MD5_CHECKSUM_CALCULATION to list of repository-s3 settings ([#19789](https://github.com/opensearch-project/OpenSearch/pull/19789))
 
 ### Dependencies
 - Bump ch.qos.logback modules from 1.5.18 to 1.5.20 in HDFS test fixture ([#19764](https://github.com/opensearch-project/OpenSearch/pull/19764))