CHANGELOG: add entry for EOL python

Author: newAM

CHANGELOG.md

@@ -6,6 +6,13 @@ 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),
 as of version 2.1.1.
 
+## [Unreleased]
+### Added
+- Added support for python version 3.14.
+
+### Removed
+- Removed support for end-of-life python version 3.9.
+
 ## [4.2.0] - 2026-01-03
 ### Added
 - Added volume and mute controls by [@contemno] in [#413].