fix APNS test after introduction of APNS_MAX_NOTIFICATION_SIZE

Author: arthurprs

tests/test_apns_push_payload.py

@@ -27,5 +27,5 @@ def test_using_extra(self):
 	def test_oversized_payload(self):
 		socket = mock.MagicMock()
 		with mock.patch("push_notifications.apns._apns_pack_frame") as p:
-			self.assertRaises(APNSDataOverflow, _apns_send, "123", "_" * 257, socket=socket)
+			self.assertRaises(APNSDataOverflow, _apns_send, "123", "_" * 2049, socket=socket)
 			p.assert_has_calls([])