fix: fix NoneType definition

Author: johanneskoester

snakemake_interface_executor_plugins/_common.py

@@ -4,7 +4,6 @@
 __license__ = "MIT"
 
 from dataclasses import MISSING, Field
-from types import NoneType
 from typing import Any, Dict, List, Literal, Tuple, Union, get_args, get_origin
 from argparse_dataclass import _handle_bool_type
 
@@ -13,6 +12,10 @@
 executor_plugin_module_prefix = executor_plugin_prefix.replace("-", "_")
 
 
+# In Python 3.10, we can use types.NoneType
+NoneType = type(None)
+
+
 # Taken from https://github.com/mivade/argparse_dataclass/pull/59/files.
 # TODO remove once https://github.com/mivade/argparse_dataclass/pull/59/files is
 # merged and released