SUPP0RT-1037: Updated changelog.

Author: Sine Jespersen

CHANGELOG.md

@@ -3,10 +3,11 @@
 All notable changes to this project will be documented in this file.
 
 ## [Unreleased]
+
+## [1.2.8] - 2023-05-25
 - [#145](https://github.com/os2display/display-api-service/pull/145)
 Gif mime type possible.
 
-
 ## [1.2.7] - 2023-04-03
 
 - [#143](https://github.com/os2display/display-api-service/pull/143)