Update copyright year to 2019 🔥

Author: pH-7

src/Interpreter/Health/HealthStatus.php

@@ -1,7 +1,7 @@
 <?php
 /**
  * @author         Pierre-Henry Soria <hi@ph7.me>
- * @copyright      (c) 2018, Pierre-Henry Soria. All Rights Reserved.
+ * @copyright      (c) 2018-2019, Pierre-Henry Soria. All Rights Reserved.
  * @license        GNU General Public License; <https://www.gnu.org/licenses/gpl-3.0.en.html>
  */