Add require php-mode 1.22.3

Author: zonuexe

phpstan.el

@@ -7,7 +7,7 @@
 ;; Version: 0.4.0
 ;; Keywords: tools, php
 ;; Homepage: https://github.com/emacs-php/phpstan.el
-;; Package-Requires: ((emacs "24.3"))
+;; Package-Requires: ((emacs "24.3") (php-mode "1.22.3"))
 ;; License: GPL-3.0-or-later
 
 ;; This program is free software; you can redistribute it and/or modify