Update CHANGELOG

Author: taylorotwell

CHANGELOG.md

@@ -1,6 +1,8 @@
 # Release Notes for 11.x
 
-## [Unreleased](https://github.com/laravel/framework/compare/v11.23.0...11.x)
+## [Unreleased](https://github.com/laravel/framework/compare/v11.23.1...11.x)
+
+## [v11.23.1](https://github.com/laravel/framework/compare/v11.23.0...v11.23.1) - 2024-09-11
 
 ## [v11.23.0](https://github.com/laravel/framework/compare/v11.22.0...v11.23.0) - 2024-09-11