chore: update changelog

Author: AhmedAmineZr

app/CHANGELOG.md

@@ -7,6 +7,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ## [Unreleased](https://github.com/Orange-OpenSource/ouds-flutter/compare/1.3.1...develop)
 ### Added
 ### Changed
+- [DemoApp] deps update dependency bump dartdoc to 9.0.4 ([#780](https://github.com/Orange-OpenSource/ouds-flutter/issues/780))
 - [DemoApp][Library] update tokens 2.5.0 ([#778](https://github.com/Orange-OpenSource/ouds-flutter/issues/778))
 - [DemoApp][Library] update tokens 2.4.0 ([#726](https://github.com/Orange-OpenSource/ouds-flutter/issues/726))