Update change log

Author: jaapmarcus

CHANGELOG.md

@@ -1,6 +1,11 @@
 # Changelog
 All notable changes to this project will be documented in this file.
 
+## [1.6.2] - Service release
+
+- Fixed an issue with rate limits in Exim4 and make it more bullet proof (#2703)
+- Fixed an issue with system-filter not propperly loaded in Exim4 for Exim 4.94 and Ugrades from 1.5.x 
+
 ## [1.6.1] - Service release
 
 ### Bugfixes