Updated yt_dlp version; added extremly basic dumb cache setup in thumbnailer; moved build and script as well as deb folder to build

plugins/youtube_download/yt_dlp/postprocessor/ffmpeg.py

@@ -192,7 +192,10 @@ class FFmpegPostProcessor(PostProcessor):
 
     @property
     def available(self):
-        return bool(self._ffmpeg_location.get()) or self.basename is not None
+        # If we return that ffmpeg is available, then the basename property *must* be run
+        # (as doing so has side effects), and its value can never be None
+        # See: https://github.com/yt-dlp/yt-dlp/issues/12829
+        return self.basename is not None
 
     @property
     def executable(self):
@@ -747,8 +750,8 @@ class FFmpegMetadataPP(FFmpegPostProcessor):
         add('track', 'track_number')
         add('artist', ('artist', 'artists', 'creator', 'creators', 'uploader', 'uploader_id'))
         add('composer', ('composer', 'composers'))
-        add('genre', ('genre', 'genres'))
-        add('album')
+        add('genre', ('genre', 'genres', 'categories', 'tags'))
+        add('album', ('album', 'series'))
         add('album_artist', ('album_artist', 'album_artists'))
         add('disc', 'disc_number')
         add('show', 'series')