Set firewall min version to 1.2.1

CRM/Stripe/Check.php

@@ -27,7 +27,7 @@ class CRM_Stripe_Check {
    */
   const MIN_VERSION_MJWSHARED = '1.0';
   const MIN_VERSION_SWEETALERT = '1.5';
-  const MIN_VERSION_FIREWALL = '1.1.3';
+  const MIN_VERSION_FIREWALL = '1.2.1';
 
   public static function checkRequirements(&$messages) {
     self::checkExtensionMjwshared($messages);