Update CHANGELOG.md

Author: utarwyn

CHANGELOG.md

@@ -11,6 +11,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 -   [#51](https://github.com/green-code-initiative/creedengo-javascript/pull/51) Add ESLint v9 and flat config support
 
+### Changed
+
+-   [#79](https://github.com/green-code-initiative/creedengo-javascript/pull/79) Integrate the test project alongside the plugin
+
 ## [2.1.0] - 2025-03-31
 
 ### Added