Add changelog entry

Signed-off-by: Michael Froh <[email protected]>

Author: msfroh

CHANGELOG.md

@@ -11,7 +11,8 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 - Introduce a new search node role to hold search only shards ([#17620](https://github.com/opensearch-project/OpenSearch/pull/17620))
 - Fix systemd integTest on deb regarding path ownership check ([#17641](https://github.com/opensearch-project/OpenSearch/pull/17641)) 
 - Add dfs transformation function in XContentMapValues ([#17612](https://github.com/opensearch-project/OpenSearch/pull/17612))
-- Added Kinesis support as a plugin for the pull-based ingestion ([#17615](https://github.com/opensearch-project/OpenSearch/pull/17615)
+- Added Kinesis support as a plugin for the pull-based ingestion ([#17615](https://github.com/opensearch-project/OpenSearch/pull/17615))
+- Add FilterFieldType for developers who want to wrap MappedFieldType ([#17627](https://github.com/opensearch-project/OpenSearch/pull/17627))
 
 ### Changed
 - Migrate BC libs to their FIPS counterparts ([#14912](https://github.com/opensearch-project/OpenSearch/pull/14912))