chore(rte): update changelog

packages/pluggableWidgets/rich-text-web/CHANGELOG.md

@@ -6,6 +6,10 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 
 ## [Unreleased]
 
+### Breaking Change
+
+-   Due to the license change of tinyMCE, we are no longer able to continue using it. And now we switch rich text library into Quill V2. This will be a major update of rich text. Different with tinyMCE, Quill is running without the needs of creating separate iframe. The widget configuration is changing, please review your configuration after updating.
+
 ## [3.3.1] - 2024-08-28
 
 ### Changed