Update changelog

Signed-off-by: Matt Provost <provomat@amazon.com>

Author: BSFishy

CHANGELOG.md

@@ -201,6 +201,7 @@ Inspired from [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 - [Multiple DataSource] Present the authentication type choices in a drop-down ([#3693](https://github.com/opensearch-project/OpenSearch-Dashboards/pull/3693))
 - [Console] Remove unused ul element and its custom styling ([#3993](https://github.com/opensearch-project/OpenSearch-Dashboards/pull/3993))
 - Fix EUI/OUI type errors ([#3798](https://github.com/opensearch-project/OpenSearch-Dashboards/pull/3798))
+- Remove unused Sass in `tile_map` plugin ([#4110](https://github.com/opensearch-project/OpenSearch-Dashboards/pull/4110))
 
 ### 🔩 Tests