Move imports to top for random (#29473)

homeassistant/components/random/sensor.py

@@ -1,5 +1,6 @@
 """Support for showing random numbers."""
 import logging
+from random import randrange
 
 import voluptuous as vol
 
@@ -82,6 +83,5 @@ class RandomSensor(Entity):
 
     async def async_update(self):
         """Get a new number and updates the states."""
-        from random import randrange
 
         self._state = randrange(self._minimum, self._maximum + 1)