Update CHANGELOG.md

Author: jgriffiths

CHANGELOG.md

@@ -4,6 +4,12 @@ All notable changes to this project will be documented in this file.
 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).
 
+## [1.0.38] - 2025-11-26
+
+### Changed
+- Increase QR guide drawing speed for faster scanning.
+- Enable firmware rollback prevention for production releases.
+
 ## [1.0.37] - 2025-11-12
 
 ### Added