update changelog

Author: jonhealy1

CHANGELOG.md

@@ -7,13 +7,17 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 
 ## [Unreleased]
 
+## [v4.0.0]
+
 ### Added
 - Added support for dynamically-generated queryables based on Elasticsearch/OpenSearch mappings, with extensible metadata augmentation [#351](https://github.com/stac-utils/stac-fastapi-elasticsearch-opensearch/pull/351)
 - Included default queryables configuration for seamless integration. [#351](https://github.com/stac-utils/stac-fastapi-elasticsearch-opensearch/pull/351)
 
 ### Changed
 - Refactored database logic to reduce duplication [#351](https://github.com/stac-utils/stac-fastapi-elasticsearch-opensearch/pull/351)
 - Replaced `fastapi-slim` with `fastapi` dependency [#351](https://github.com/stac-utils/stac-fastapi-elasticsearch-opensearch/pull/351)
+- Changed minimum Python version to 3.9 [#354](https://github.com/stac-utils/stac-fastapi-elasticsearch-opensearch/pull/354)
+- Updated stac-fastapi api, types, and extensions libraries to 5.1.1 [#354](https://github.com/stac-utils/stac-fastapi-elasticsearch-opensearch/pull/354)
 
 ### Fixed
 - Improved performance of `mk_actions` and `filter-links` methods [#351](https://github.com/stac-utils/stac-fastapi-elasticsearch-opensearch/pull/351)
@@ -314,7 +318,8 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 - Use genexp in execute_search and get_all_collections to return results.
 - Added db_to_stac serializer to item_collection method in core.py.
 
-[Unreleased]: https://github.com/stac-utils/stac-fastapi-elasticsearch/tree/v3.2.5...main
+[Unreleased]: https://github.com/stac-utils/stac-fastapi-elasticsearch/tree/v4.0.0...main
+[v4.0.0]: https://github.com/stac-utils/stac-fastapi-elasticsearch/tree/v3.2.4...v4.0.0
 [v3.2.5]: https://github.com/stac-utils/stac-fastapi-elasticsearch/tree/v3.2.4...v3.2.5
 [v3.2.4]: https://github.com/stac-utils/stac-fastapi-elasticsearch/tree/v3.2.3...v3.2.4
 [v3.2.3]: https://github.com/stac-utils/stac-fastapi-elasticsearch/tree/v3.2.2...v3.2.3