Set the release date

Author: antonwolfy

CHANGELOG.md

@@ -4,7 +4,7 @@ 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).
 
-## [2.6.1] (11/XX/2025)
+## [2.6.1] (11/25/2025)
 
 ### Fixed
 * Fixed the run-time dependencies of `mkl-service` package to explicitly depend on a non–free-threaded (GIL-enabled) Python [gh-111](github.com/IntelPython/mkl-service/pull/111)