oschmod does not work with pathlib.Path in Windows

[zapplecat]

Describe the bug

The pathlib works with oschmod on OSX and Linux pathlib.Path, but on Windows, we get TypeError: Objects of type 'WindowsPath' can not be converted to Unicode.

Your configuration

Windows 8.1, Python 3.9.6

Steps to reproduce

Python 3.9.6 (tags/v3.9.6:db3ff76, Jun 28 2021, 15:26:21) [MSC v.1929 64 bit (AMD64)] on win32
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>>> import oschmod
>>> import pathlib
>>> p = pathlib.Path('E:/Projects/test.txt')
>>> oschmod.get_mode(p)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "E:\Projects\oschmod_venv\lib\site-packages\oschmod\__init__.py", line 163, in get_mode
    return win_get_permissions(path)
  File "E:\Projects\oschmod_venv\lib\site-packages\oschmod\__init__.py", line 364, in win_get_permissions
    return _win_get_permissions(path, get_object_type(path))
  File "E:\Projects\oschmod_venv\lib\site-packages\oschmod\__init__.py", line 376, in _win_get_permissions
    sec_des = win32security.GetNamedSecurityInfo(
TypeError: Objects of type 'WindowsPath' can not be converted to Unicode.
>>> oschmod.get_mode('E:/Projects/test.txt')
7

Expected behavior
pathlib.Path works with oschmod operations

What happened instead
pathlib.Path with oschmod operations fails with TypeError

Additional context
Add any other context about the problem here.