Releasing 3.12.0.

Author: cyrilverloop

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/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
-## [Unreleased]
+## [3.12.0] - 2025-06-30
 ### Changed
 - cyril-verloop/codingame-configuration 1.15.0 => 1.16.0.
 - mocha 11.5.0 => 11.7.1.