Sometimes I get `HTTP Error 401: Unauthorized` when trying to export to YouTube

Thanks for adding Youtube export. Very handy.
Though sometimes, I get a status 401 error. Disconnecting & re-connecting to Youtube fixes it. Here’s the logs for it:

19:02:19.504 DEBUG hosaka.core.ffmpeg:849 - Starting FFmpeg encoder: ffmpeg -y -loglevel warning -f rawvideo -pix_fmt bgr24 -s 1366x768 -r 60 -i pipe:0 -i /tmp/hosaka_audio_2_47d5d0b2.wav -c:v libopenh264 -b:v 8000000 -g 30 -profile:v high -pix_fmt yuv420p -map 0:v -map 1:a -c:a aac -b:a 192k -movflags frag_keyframe+empty_moov -f mp4 pipe:1
19:02:19.505 DEBUG hosaka.core.ffmpeg:870 - FFmpeg encoder started (PID: 221)
19:02:19.505 DEBUG hosaka.pipeline.export:170 - Export initialization complete
19:02:19.505 DEBUG hosaka.pipeline.export:589 - Export initialized successfully
19:02:20.416 ERROR hosaka.ui.workers.export:221 - Streaming export+upload failed: HTTP Error 401: Unauthorized
Traceback (most recent call last):
  File "/app/lib/python3.12/site-packages/hosaka/ui/workers/export.py", line 183, in _run_streaming
    exporter.export_recording(
  File "/app/lib/python3.12/site-packages/hosaka/pipeline/export.py", line 592, in export_recording
    on_encoder_started()
  File "/app/lib/python3.12/site-packages/hosaka/ui/workers/export.py", line 175, in on_encoder_started
    coordinator.start(original_output_path.name)
  File "/app/lib/python3.12/site-packages/hosaka/core/streaming_upload.py", line 47, in start
    self._provider.start_streaming_upload(filename, content_type)
  File "/app/lib/python3.12/site-packages/hosaka/core/youtube_upload.py", line 230, in start_streaming_upload
    with urllib.request.urlopen(request, timeout=HTTP_TIMEOUT) as response:
         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.12/urllib/request.py", line 215, in urlopen
    return opener.open(url, data, timeout)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.12/urllib/request.py", line 521, in open
    response = meth(req, response)
               ^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.12/urllib/request.py", line 630, in http_response
    response = self.parent.error(
               ^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.12/urllib/request.py", line 559, in error
    return self._call_chain(*args)
           ^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.12/urllib/request.py", line 492, in _call_chain
    result = func(*args)
             ^^^^^^^^^^^
  File "/usr/lib/python3.12/urllib/request.py", line 639, in http_error_default
    raise HTTPError(req.full_url, code, msg, hdrs, fp)
urllib.error.HTTPError: HTTP Error 401: Unauthorized
19:02:20.420 ERROR hosaka.app:1474 - Export failed: HTTP Error 401: Unauthorized