Fix test (#470)

There was a test not generic enough and failed during changed ordermin
for the underlying asset.

Author: btschwertfeger

tests/spot/test_spot_trade.py

@@ -363,7 +363,7 @@ def test_truncate_fail_volume_ordermin(self: Self, spot_trade: Trade) -> None:
         """
         with pytest.raises(
             ValueError,
-            match=r"Volume is less than the ordermin: 0.00005!",
+            match=r"Volume is less than the ordermin:.*",
         ):
             spot_trade.truncate(amount=0.0000001, amount_type="volume", pair="XBTUSD")