audio/spotify-tui: Update to 0.20.0

From ChangeLog: https://github.com/Rigellute/spotify-tui/releases/tag/v0.20.0

Fix audio analysis view and other improvements

• Move pagination instructions to top of help menu
• Add user configuration toggle for the loading indicator
• Add support for saving an album and following an artist in artist view
• Use the # glyph to indicate the currently playing song
• Jump to play context (if available) - default binding is o

PR: 246805
Submitted by: vulcan@wired.sh (maintainer)