update changelog

Author: jonhealy1

CHANGELOG.md

@@ -14,6 +14,8 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 
 ### Changed
 
+- Updated the pip_docker example to use stac-fastapi.elasticsearch 2.1.0 and the elasticsearch 8.11.0 docker image. [#216](https://github.com/stac-utils/stac-fastapi-elasticsearch-opensearch/pull/216)
+
 ### Fixed
 
 - URL encode next href: [#215](https://github.com/stac-utils/stac-fastapi-elasticsearch-opensearch/issues/215)