Migrate away from deprecated distutils

Migrate away from deprecated distutils

Before:

```
=============================== warnings summary ===============================
test/test_ctests.py:12
  /tmp/libfuse-build-mB50ZC/build-gcc-9/test/test_ctests.py:12: DeprecationWarning: The distutils package is deprecated and slated for removal in Python 3.12. Use setuptools or check PEP 632 for potential alternatives
    from distutils.version import LooseVersion

-- Docs: https://docs.pytest.org/en/stable/how-to/capture-warnings.html
```