chore: update CHANGELOG.md

Author: matkoch

CHANGELOG.md

@@ -5,6 +5,7 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
 
 ## [vNext]
+- Fixed `build.schema.json` generation to use `allOf` for user and base type properties
 
 ## [8.1.3] / 2024-11-05
 - Fixed naming from `NukeBuild.IsSucessful` to `IsSucceeding`