Update NEWS.md

Author: kellertuer

NEWS.md

@@ -5,7 +5,7 @@ All notable Changes to the Julia package `LieGroups.jl` will be documented in th
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
-## [0.1.3] unreleased
+## [0.1.3] 2025-08-04
 
 ### Added