10.x release failed

[duckinator]

Merging #383 triggered this run: https://github.com/duckinator/bork/runs/44386449479

That run resulted in this error:

bork.pypi.upload INFO Uploading 2 files to PyPi repository 'https://upload.pypi.org/legacy/'.
Traceback (most recent call last):
  File "/usr/local/bin/bork", line 8, in <module>
    sys.exit(main())
             ^^^^^^
  File "/usr/local/lib/python3.12/site-packages/bork/cli.py", line 237, in main
    args.func(args)
  File "/usr/local/lib/python3.12/site-packages/bork/cli.py", line 115, in release
    api.release(pypi_repository, args.dry_run, args.github, args.pypi)
  File "/usr/local/lib/python3.12/site-packages/bork/api.py", line 162, in release
    pypi.upload(repository_name, './dist/*.tar.gz', './dist/*.whl',
  File "/usr/local/lib/python3.12/site-packages/bork/pypi.py", line 135, in upload
    Uploader(files, repository_name).upload(**kwargs)
  File "/usr/local/lib/python3.12/site-packages/bork/pypi.py", line 125, in upload
    response = self._upload_file(self.repository, file, metadata)
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.12/site-packages/bork/pypi.py", line 102, in _upload_file
    response = post(url, form, auth=(self.username, self.password))
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.12/site-packages/bork/http.py", line 31, in post
    return request("POST", url, fields, auth)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.12/site-packages/bork/http.py", line 16, in request
    response = http.request(method, url, fields=fields, headers=headers, retries=MAX_RETRIES)
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.12/site-packages/urllib3/_request_methods.py", line 143, in request
    return self.request_encode_body(
           ^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.12/site-packages/urllib3/_request_methods.py", line 264, in request_encode_body
    body, content_type = encode_multipart_formdata(
                         ^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.12/site-packages/urllib3/filepost.py", line 81, in encode_multipart_formdata
    body.write(data)
TypeError: a bytes-like object is required, not 'NoneType'

[duckinator]

It will be a while before I can get to this. If you want to help debug it, you can clone the repo, run bork build, and try making a release using it (either by installing the built wheel or using the zipapp).