docs: update changelog

Author: nunomaduro

CHANGELOG.md

@@ -8,6 +8,9 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 
 ## [UNRELEASED](https://github.com/algolia/algoliasearch-client-javascript/compare/4.3.0...master)
 
+## Added
+- Support to multiple `conditions` on query rules ([#1171](https://github.com/algolia/algoliasearch-client-javascript/pull/1171))
+
 ## [v4.3.0](https://github.com/algolia/algoliasearch-client-javascript/compare/4.2.0...4.3.0)
 
 ## Added