Implement gather() for 2nd energy_log_update use

Author: bouwew

plugwise_usb/nodes/circle.py

@@ -474,8 +474,11 @@ async def get_missing_energy_logs(self) -> None:
             )
 
             missing_addresses = sorted(missing_addresses, reverse=True)
+            log_update_tasks = []
             for address in missing_addresses:
-                await self.energy_log_update(address)
+                log_update_tasks.append(self.energy_log_update(address))
+            
+            await gather(*log_update_tasks)
 
         if self._cache_enabled:
             await self._energy_log_records_save_to_cache()