Update pytest settings

Author: seratch

pytest.ini

@@ -5,4 +5,5 @@ log_format = %(asctime)s %(levelname)s %(message)s
 log_date_format = %Y-%m-%d %H:%M:%S
 filterwarnings =
     ignore:"@coroutine" decorator is deprecated since Python 3.8, use "async def" instead:DeprecationWarning
-    ignore:The loop argument is deprecated since Python 3.8, and scheduled for removal in Python 3.10.:DeprecationWarning
+    ignore:The loop argument is deprecated since Python 3.8, and scheduled for removal in Python 3.10.:DeprecationWarning
+asyncio_mode = auto