Fix version date [skip-ci]

Author: martignoni

version.php

@@ -26,7 +26,7 @@
 
 $plugin = new stdClass();
 
-$plugin->version  = 2019071200;
+$plugin->version  = 2019071300;
 $plugin->release = '2.2.1';
 $plugin->requires = 2018120300;
 $plugin->maturity = MATURITY_STABLE;