Updated changelog

Author: tuj

CHANGELOG.md

@@ -4,6 +4,9 @@ All notable changes to this project will be documented in this file.
 
 ## [Unreleased]
 
+- [#219](https://github.com/os2display/display-api-service/pull/219)
+  - Fixed psalm, test, coding standards and updated api spec.
+
 ## [2.1.3] - 2024-10-25
 
 - [#220](https://github.com/os2display/display-api-service/pull/220)