Update CHANGELOG.md to document the addition of version 1.1.0 and dependency update for "devanoxltd/string-encoder"

Author: mr-chetan

CHANGELOG.md

@@ -5,5 +5,10 @@ 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]
+
+## 1.1.0
+- Update dependency "devanoxltd/string-encoder" to version "^1.1".
+
 ## 1.0.0
 - Initial release. After changes of paquettg/php-html-parser