Add PR to the changelog

Author: antonwolfy

CHANGELOG.md

@@ -7,6 +7,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ## [0.20.0] - MM/DD/2026
 
 This release changes the license from `BSD-2-Clause` to `BSD-3-Clause`.
+The release stops supporting python 3.9, and so python 3.10 is a minimum required version since now.
 
 ### Added
 
@@ -24,6 +25,8 @@ This release changes the license from `BSD-2-Clause` to `BSD-3-Clause`.
 
 ### Removed
 
+* Dropped support of python 3.9 [#2626](https://github.com/IntelPython/dpnp/pull/2626)
+
 ### Fixed
 
 ### Security