DeprecationWarning: onerror argument is deprecated, use onexc instead on python 3.12b1

when running with `filterwarnings=error` at exit pytest prints:

```
python3.12/site-packages/_pytest/pathlib.py:152: DeprecationWarning: onerror argument is deprecated, use onexc instead
  shutil.rmtree(str(path), onerror=onerror)
```