explicitly .close() task in http.request_many()

src/utils/http.py

@@ -258,6 +258,7 @@ def request_many(requests: typing.List[Request]) -> typing.Dict[str, Response]:
     task = asyncio.wait(awaits, loop=loop, timeout=5)
     loop.run_until_complete(task)
     loop.close()
+    task.close()
 
     return responses