docs: update changelog

Author: KristjanESPERANTO

CHANGELOG.md

@@ -18,6 +18,7 @@ Thanks to: @dathbe.
 - [clock] Add CSS to prevent line breaking of sunset/sunrise time display (#3816)
 - [core] Enhance system information logging format and include additional env and RAM details (#3839, #3843)
 - [refactor] Add new file `js/module_functions.js` to move code used in several modules to one place (#3837)
+- [tests] refactor: simplify jest config file
 
 ### Updated