Python 3.11

Please make it compatible with Python 3.11

```
13:56:35-478694 INFO Configuring accelerate...
Traceback (most recent call last):
File "", line 198, in _run_module_as_main
File "", line 88, in _run_code
File "G:\_AI\Stable Diffusion\_Training\kohya_ss\venv\Scripts\accelerate.exe\__main__.py", line 4, in
File "G:\_AI\Stable Diffusion\_Training\kohya_ss\venv\Lib\site-packages\accelerate\commands\accelerate_cli.py", line 21, in
from accelerate.commands.estimate import estimate_command_parser
File "G:\_AI\Stable Diffusion\_Training\kohya_ss\venv\Lib\site-packages\accelerate\commands\estimate.py", line 35, in
import timm
File "G:\_AI\Stable Diffusion\_Training\kohya_ss\venv\Lib\site-packages\timm\__init__.py", line 2, in
from .models import create_model, list_models, is_model, list_modules, model_entrypoint, \
File "G:\_AI\Stable Diffusion\_Training\kohya_ss\venv\Lib\site-packages\timm\models\__init__.py", line 28, in
from .maxxvit import *
File "G:\_AI\Stable Diffusion\_Training\kohya_ss\venv\Lib\site-packages\timm\models\maxxvit.py", line 225, in
@dataclass
^^^^^^^^^
File "C:\Users\xyz\AppData\Local\Programs\Python\Python311\Lib\dataclasses.py", line 1230, in dataclass
return wrap(cls)
^^^^^^^^^
File "C:\Users\xyz\AppData\Local\Programs\Python\Python311\Lib\dataclasses.py", line 1220, in wrap
return _process_class(cls, init, repr, eq, order, unsafe_hash,
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\xyz\AppData\Local\Programs\Python\Python311\Lib\dataclasses.py", line 958, in _process_class
cls_fields.append(_get_field(cls, name, type, kw_only))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\xyz\AppData\Local\Programs\Python\Python311\Lib\dataclasses.py", line 815, in _get_field
raise ValueError(f'mutable default {type(f.default)} for field '
ValueError: mutable default for field conv_cfg is not allowed: use default_factory
```

Start by reproducing the Python 3.11 failure from the traceback, which enters accelerate and then timm.models.maxxvit.py at the dataclass definition. Inspect the dependency compatibility involved and verify that configuring accelerate completes without the reported ValueError.

Written by the indexing model from the issue text.