Update changelog for 4.2.0 (#2784)

Author: GromNaN

CHANGELOG.md

@@ -3,6 +3,9 @@ All notable changes to this project will be documented in this file.
 
 ## [unreleased]
 
+
+## [4.2.0] - 2024-12-14
+
 * Add support for Laravel 11 by @GromNaN in [#2735](https://github.com/mongodb/laravel-mongodb/pull/2735)
 * Implement Model::createOrFirst() using findOneAndUpdate operation by @GromNaN in [#2742](https://github.com/mongodb/laravel-mongodb/pull/2742)