Update version and release notes

Author: shahbaz-mehar

CHANGELOG.md

@@ -4,6 +4,10 @@ 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).
 
+## [3.5.3] - 2025-08-12
+### Added
+- Rename `AuthenticationResult` property to `Authentication` in `Transaction` class.
+
 ## [3.5.2] - 2025-08-08
 ### Added
 - Correct `Transaction` `CreditCardExpiry` type.

src/AbstractApi.php

@@ -55,7 +55,7 @@ abstract class AbstractApi
     /**
      * PHP API version
      */
-    const PHP_API_VERSION = '3.5.2';
+    const PHP_API_VERSION = '3.5.3';
 
     /**
      * Event dispatcher