Update changelog for 2.7.2

CHANGELOG.md

@@ -5,6 +5,15 @@ 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).
 
+## [2.7.2] - 2024-12-29
+
+### Mostly technology upgrades
+
+- Add an option to scale up tests before calculating the average
+- Theming improvements for more contrast
+- Upgrade to Flutter 3.27
+- Change rendering engine to Impeller for better rendering performance on every platform
+
 ## [2.7.1] - 2024-10-12
 
 ### Quick hotfix