docs: update changelog for change 338c2c5

Author: daniel-jones-dev

CHANGELOG.md

@@ -6,6 +6,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 
 ## [Unreleased]
+### Fixed
+* Add `.gitattributes` file to exclude irrelevant files from package download.
+  * Thanks to [VincentLanglet](https://github.com/VincentLanglet) for [#30](https://github.com/DeepLcom/deepl-php/pull/30)
 
 
 ## [1.5.0] - 2023-06-26