test: fix leverage test

Author: xmatthias

tests/exchange/test_exchange.py

@@ -5902,8 +5902,8 @@ def test_get_max_leverage_futures(default_conf, mocker, leverage_tiers):
     assert exchange.get_max_leverage("XRP/USDT:USDT", 1.0) == 20.0
     assert exchange.get_max_leverage("BNB/USDT:USDT", 100.0) == 75.0
     assert exchange.get_max_leverage("BTC/USDT:USDT", 170.30) == 125.0
-    assert pytest.approx(exchange.get_max_leverage("XRP/USDT:USDT", 99999.9)) == 20
-    assert pytest.approx(exchange.get_max_leverage("BNB/USDT:USDT", 1500)) == 33.333333333333333
+    assert pytest.approx(exchange.get_max_leverage("XRP/USDT:USDT", 99999.9)) == 5
+    assert pytest.approx(exchange.get_max_leverage("BNB/USDT:USDT", 1500)) == 25
     assert exchange.get_max_leverage("BTC/USDT:USDT", 300000000) == 2.0
     assert exchange.get_max_leverage("BTC/USDT:USDT", 600000000) == 1.0  # Last tier