fixup: energy_log_cache Python code reformatted using Ruff

Author: autoruff

plugwise_usb/nodes/circle.py

@@ -577,9 +577,10 @@ async def energy_log_update(
         self, address: int | None, save_cache: bool = True
     ) -> bool:
         """Request energy logs from node and store them.
-        
+
         Return True if processing succeeded (records stored in memory), regardless of whether new entries were added.
-        Return False on transport or address errors."""
+        Return False on transport or address errors.
+        """
         if address is None:
             return False