Bump stripe-php from 19.4.1 to 20.0.0

plugins/stripe-php/lib/V2/Core/EventNotification.php

@@ -65,7 +65,7 @@ abstract class EventNotification
 
     /**
      * Helper for constructing an Event Notification. Doesn't perform signature validation, so you
-     * should use \Stripe\BaseStripeClient#parseEventNotification instead for
+     * should use \Stripe\BaseStripeClient::parseEventNotification instead for
      * initial handling. This is useful in unit tests and working with EventNotifications that you've
      * already validated the authenticity of.
      *
@@ -78,6 +78,12 @@ abstract class EventNotification
     {
         $json = json_decode($jsonStr, true);
 
+        if (isset($json['object']) && 'event' === $json['object']) {
+            throw new \Stripe\Exception\UnexpectedValueException(
+                'You passed a webhook payload to StripeClient::parseEventNotification, which expects an event notification. Use Webhook::constructEvent instead.'
+            );
+        }
+
         $class = UnknownEventNotification::class;
         $eventNotificationTypes = EventNotificationTypes::v2EventMapping;
         if (\array_key_exists($json['type'], $eventNotificationTypes)) {