[FIX] payment_sips: wrong numerical code for PLN currency

closes odoo/odoo#106552

X-original-commit: d9856868
Signed-off-by: Antoine Vandevenne (anv) <anv@odoo.com>
Signed-off-by: Vallaeys Valentin (vava) <vava@odoo.com>

addons/payment_sips/models/const.py

@@ -55,7 +55,7 @@ SUPPORTED_CURRENCIES = {
     'BGN': '975',
     'EUR': '978',
     'UAH': '980',
-    'PLN': '996',
+    'PLN': '985',
     'BRL': '986',
 }