Fix unknown data in vultr (#85627)

tests/components/vultr/fixtures/server_list.json

@@ -50,7 +50,7 @@
     "DCID": "1",
     "default_password": "nreqnusibni",
     "date_created": "2014-10-13 14:45:41",
-    "pending_charges": "not a number",
+    "pending_charges": "3.72",
     "status": "active",
     "cost_per_month": "73.25",
     "current_bandwidth_gb": 957.457,

tests/components/vultr/test_sensor.py

@@ -82,7 +82,7 @@ def test_sensor(hass: HomeAssistant):
 
             elif device.subscription == "123456":  # Custom name with 1 {}
                 assert device.name == "Server Pending Charges"
-                assert device.state == "not a number"
+                assert device.state == 3.72
                 tested += 1
 
             elif device.subscription == "555555":  # No {} in name