Add entry to CHANGELOG.md

Author: asantoma

CHANGELOG.md

@@ -21,6 +21,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Fixed
 
 -   Fixed stop-job handlers in PowerShell and Python agents crashing when the target job doesn't exist
+-   Fixed powerview add-netuser
 
 ## [6.4.1] - 2026-02-15
 -   Fixed the `docs/quickstart/installation/README.md` file to specify a previously missing reference to Ubuntu