fix contact.form.yaml

ot_templating/Resources/Private/Forms/Contact.form.yaml

@@ -21,11 +21,12 @@ finishers:
         - ''
       blindCarbonCopyRecipients:
         - ''
-      recipients: { }
+      recipients:
+        dummy@foo.bar: Contact
       format: html
-      attachUploads: 'true'
+      attachUploads: true
       translation:
-        language: ''
+        language: default
   -
     identifier: EmailToSender
     options: