fix 'list' object has no attribute 'verify'

Author: epetrovski

src/zeep/wsdl/bindings/soap.py

@@ -216,7 +216,11 @@ def process_reply(self, client, operation, response):
                 message_pack = None
 
         if client.wsse:
-            client.wsse.verify(doc)
+            if isinstance(client.wsse, list):
+                for wsse in client.wsse:
+                    wsse.verify(doc)
+            else:
+                client.wsse.verify(doc)
 
         doc, http_headers = plugins.apply_ingress(
             client, doc, response.headers, operation