add support for new pain message version 001.001.09 to simple instant payment method (requires merge #59 in sepaxml repo)

Author: yniverz

fints/client.py

@@ -827,7 +827,13 @@ def simple_sepa_transfer(self, account: SEPAAccount, iban: str, bic: str,
             "batch": False,
             "currency": "EUR",
         }
-        version = self._find_supported_sepa_version(['pain.001.001.03', 'pain.001.003.03'])
+        
+        version = self._find_supported_sepa_version([
+            'pain.001.003.03',
+            'pain.001.001.09',
+            'pain.001.001.03'
+        ])
+
         sepa = SepaTransfer(config, version)
         payment = {
             "name": recipient_name,