Rich Text v2.1.0: Update changelog (#166)

Author: rahmanunver

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

@@ -6,6 +6,8 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 
 ## [Unreleased]
 
+## [2.1.0] - 2022-11-22
+
 ### Security
 
 -   Update ckeditor4 to version 4.20.0 to prevent XSS