fixed tests according to failed tests on github

Author: hippocritical

tests/exchange/test_exchange.py

@@ -1012,7 +1012,7 @@ def test_validate_required_startup_candles(default_conf, mocker, caplog):
     ex._ft_has["ohlcv_has_history"] = False
     with pytest.raises(
         OperationalException,
-        match=r"This strategy requires 2500.*, " r"which is more than the amount.*",
+        match=r"This strategy requires 2500.*, " r"which is more than .* the amount",
     ):
         ex.validate_required_startup_candles(2500, "5m")