Update CHANGELOG.md

Author: kotivuori

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).
 
+## [2.7.6] - 2025-12-10
+### Added
+- Support for PHP 8.5
+### Changed
+- Token customer class networkAddress and countryCode to be nullable
+
 ## [2.7.5] - 2025-06-13
 ### Added
 - Validation for empty item VAT percentage