updated CHANGELOG

Author: YashTotale

CHANGELOG.md

@@ -8,6 +8,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 **Table of Contents**
 
 - [[Unreleased]](#unreleased)
+- [[v1.2.3] - (2020-11-26)](#v123---2020-11-26)
+  - [Removed](#removed)
 - [[v1.2.2] - (2020-11-26)](#v122---2020-11-26)
   - [Fixed](#fixed)
 - [[v1.2.1] - (2020-11-26)](#v121---2020-11-26)
@@ -30,6 +32,14 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ---
 
+## [v1.2.3] - (2020-11-26)
+
+### Removed
+
+- Source Maps for [UMD](https://github.com/umdjs/umd#readme) builds
+
+---
+
 ## [v1.2.2] - (2020-11-26)
 
 ### Fixed