Update changelog

Author: Seldaek

CHANGELOG.md

@@ -3,6 +3,10 @@
 All notable changes to this project will be documented in this file.
 This project adheres to [Semantic Versioning](http://semver.org/).
 
+### [3.4.3] 2024-09-19
+
+  * Fixed some type annotations
+
 ### [3.4.2] 2024-07-12
 
   * Fixed PHP 5.3 syntax error
@@ -187,6 +191,7 @@ This project adheres to [Semantic Versioning](http://semver.org/).
     - Namespace: `Composer\Test\Package\LinkConstraint` -> `Composer\Test\Semver\Constraint`
   * Changed: code style using php-cs-fixer.
 
+[3.4.3]: https://github.com/composer/semver/compare/3.4.2...3.4.3
 [3.4.2]: https://github.com/composer/semver/compare/3.4.1...3.4.2
 [3.4.1]: https://github.com/composer/semver/compare/3.4.0...3.4.1
 [3.4.0]: https://github.com/composer/semver/compare/3.3.2...3.4.0