Update CHANGELOG.md

Author: irazasyed

CHANGELOG.md

@@ -4,6 +4,8 @@ All notable changes to `telegram` will be documented in this file
 
 ## Unreleased
 
+## 2.0.0 - 2022-02-11
+
 - Add Laravel 9 Support.
 - Add Laravel conditional trait to payload builder to use `when` on methods chain. PR [#139](https://github.com/laravel-notification-channels/telegram/pull/139).
 - Drop support for older version of PHP `< 7.4` and Laravel `< 8`.