Update CHANGELOG.md

Author: schloerke

CHANGELOG.md

@@ -3,6 +3,10 @@
 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).
 
+## [0.8.3] - 2025-03-19
+
+* Updated to Shinylive web assets 0.10.4.
+
 ## [0.8.2] - 2025-03-19
 
 * Updated to Shinylive web assets 0.10.3.