chore: release 1.2.0

Author: williamdes

CHANGELOG.md

@@ -7,6 +7,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased] - yyyy-mm-dd
 
+## [1.2.0] - 2021-12-12
+
 - Added `ReturnTypeWillChange` for PHP 8.1 on SignRequest and RegistrationRequest
 - Wrote tests for most of the code of this library
 - Run tests on GitHub actions