[Installer] Update requirements.php license
[Installer] Update requirements.php license

(from LGPL to MIT, as it is the new license distribution since this pH7Builder 16.3.0 version).

pH7Software/pH7-Social-Dating-CMS,pH7Software/pH7-Social-Dating-CMS,pH7Software/pH7-Social-Dating-CMS,pH7Software/pH7-Social-Dating-CMS