Update CHANGELOG.md

Author: irazasyed

CHANGELOG.md

@@ -4,6 +4,8 @@ All notable changes to `telegram` will be documented in this file
 
 ## Unreleased
 
+## 1.0.0 - 2021-12-11
+
 - Register Telegram instance to container. 
 - Add `TelegramUpdates` to retrieve bot updates. PR [#133](https://github.com/laravel-notification-channels/telegram/pull/133).
 - Refactor TelegramChannel. PR [#136](https://github.com/laravel-notification-channels/telegram/pull/136).