chore(@mendix/web-actions): update changelog

Author: uicontent

packages/modules/web-actions/CHANGELOG.md

@@ -6,6 +6,8 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 
 ## [Unreleased]
 
+## [2.8.0] - 2023-06-06
+
 ### Changed
 
 -   We updated the light and dark icons and tiles for the actions.