Shutdown SharedMemoryManager in 'run()'

Author: TheGreatCabbage

scheduler/Scheduler.py

@@ -258,6 +258,8 @@ async def run(self) -> Union[List[Tuple], List[Any]]:
         self._sanitise_output()
         self.finished = True
 
+        self._shutdown()
+
         return self.output
 
     def run_blocking(self) -> Union[List[Tuple], List[Any]]: