Update CHANGELOG

Author: ndgrigorian

CHANGELOG.md

@@ -4,6 +4,11 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [dev] - YYYY-MM-DD
+
+### Removed
+* Dropped support for Python 3.9 [gh-243](https://github.com/IntelPython/mkl_fft/pull/243)
+
 ## [2.1.1] - 2025-10-09
 
 ### Fixed