Update Changelog

Author: turegjorup

CHANGELOG.md

@@ -4,6 +4,9 @@ All notable changes to this project will be documented in this file.
 
 ## [Unreleased]
 
+- [#376](https://github.com/os2display/display-api-service/pull/376)
+  - Add prod override for cache.app to use Redis in production.
+
 ## [2.6.1] - 2026-03-06
 
 - [#347](https://github.com/os2display/display-api-service/pull/347)