[FIX] snailmail: fix external tests

From now, the color option 2 ('Mixed color & B/W') is not available anymore. So set the option to 1 ('Color').

Task-ID: 2008913

closes odoo/odoo#34052

Signed-off-by: Pierre Rousseau (pro) <pro@odoo.com>

addons/snailmail_account/tests/test_pingen_send.py

@@ -25,7 +25,7 @@ class TestPingenSend(AccountingTestCase):
         self.data = {
             'data': json.dumps({
                 'speed': 1,
-                'color': 2,
+                'color': 1,
                 'duplex': 0,
                 'send': True,
             })