Installing pywin32-ctypes fails on windows-latest with Python 3.8+

[andy-maier]

Installation of pywin32-ctypes fails on windows-latest with Python 3.8,3.9,3.10 with:

INFO: pip is looking at multiple versions of pywin32-ctypes to determine which version is compatible with other requirements. This could take a while.
Collecting pywin32-ctypes!=0.1.0,!=0.1.1
  Downloading pywin32-ctypes-0.1.2.tar.gz (24 kB)
  Preparing metadata (setup.py): started
  Preparing metadata (setup.py): finished with status 'error'
  error: subprocess-exited-with-error
  
  python setup.py egg_info did not run successfully.
  exit code: 1
  
  [1 lines of output]
  error in pywin32-ctypes setup command: use_2to3 is invalid.
  [end of output]
  
  note: This error originates from a subprocess, and is likely not a problem with pip.
error: metadata-generation-failed

Encountered error while generating package metadata.

See above for output.

note: This is an issue with the package mentioned above, not pip.
hint: See above for details.

This was from today's test run on Python 3.8: https://github.com/zhmcclient/python-zhmcclient/actions/runs/3666135441/jobs/6197669174

I did not analyze why it started failing just this week. The week before, the same test run succeeded on Python 3.8:

Collecting pywin32-ctypes!=0.1.0,!=0.1.1
  Downloading pywin32_ctypes-0.2.0-py2.py3-none-any.whl (28 kB)

Test run: https://github.com/zhmcclient/python-zhmcclient/actions/runs/3610424073/jobs/6084221588

Created jaraco/keyring#612 to follow up in keyring.

This issue is to circumvent the issue.