chore: update CHANGELOG.md

Author: andredestro

CHANGELOG.md

@@ -4,6 +4,12 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [Unreleased]
+
+### Features
+
+- Add support for PDF files in the WebView via PDF.js [RMET-2053](https://outsystemsrd.atlassian.net/browse/RMET-2053)
+
 ## [1.4.1]
 
 ### Features