client: fix return type

Author: Anrijs

aranet4/client.py

@@ -1113,7 +1113,7 @@ async def _find_nearby(detect_callback: callable, duration: int) -> list[BLEDevi
             if "Aranet" in device.name]
 
 
-def find_nearby(detect_callback: callable, duration: int = 8) -> List[BLEDevice]:
+def find_nearby(detect_callback: callable, duration: int = 8) -> list[BLEDevice]:
     """
     Scans for nearby Aranet4 devices.
     Will call callback on every valid Aranet4 advertisement, including duplicates