Added "RECAPTCHA_SUPPORT_V3" constant

system/build/lm/lm.php

@@ -81,6 +81,7 @@
 define('RECAPTCHA_NO_SUPPORT', 0);
 define('RECAPTCHA_SUPPORT_V2', 1);
 define('RECAPTCHA_SUPPORT_V2_INVISIBLE', 2);
+define('RECAPTCHA_SUPPORT_V3', 4);
 
 // list of all variables accessed in the language file
 $_DB_mysqldump_path = '{$_DB_mysqldump_path}';