Fix embedded cover art

[iRet]

The PR is to fix embedded cover art
Inspired by hbashton/spotify-ripper#53

[scaronni]

Thanks for the merge request. I've not been using spotify-ripper for a few weeks and now I'm having issues with spotipy, so I can't really test and create a new tag:

Traceback (most recent call last):
  File "/usr/lib64/python3.9/threading.py", line 954, in _bootstrap_inner
    self.run()
  File "/usr/lib/python3.9/site-packages/spotify_ripper/ripper.py", line 163, in run
    init_spotipy(self.session.user.canonical_name)
  File "/usr/lib/python3.9/site-packages/spotify_ripper/spotipy_integration.py", line 17, in init_spotipy
    token = spotipy.util.prompt_for_user_token(username, scope)
  File "/usr/lib/python3.9/site-packages/spotipy/util.py", line 96, in prompt_for_user_token
    token_info = sp_oauth.validate_token(sp_oauth.cache_handler.get_cached_token())
  File "/usr/lib/python3.9/site-packages/spotipy/oauth2.py", line 325, in validate_token
    token_info = self.refresh_access_token(
  File "/usr/lib/python3.9/site-packages/spotipy/oauth2.py", line 554, in refresh_access_token
    raise SpotifyException(response.status_code,
spotipy.exceptions.SpotifyException: http status: 400, code:-1 - Couldn't refresh token: code:400 reason:Bad Request, reason: {'Authorization': 'Basic YjJhNmY1NDkzMzlkNDhjMmJlM2MwYzUwMWZhMmM4MzA6NTE0YjM0OWNhZTFjNDBkNmI1MmM0OThkNWZiNjFhZmE='}

Not clear to me what has changed. Any hint?

[scaronni]

Ok fixed, I just had to delete the cache file.

[iRet]

@scaronni thanks for sharing!