28.6-ls105

LinuxServer Changes:

Rebase to Alpine 3.17, migrate to s6v3.

owntone-server Changes:

• German translation of web UI
• web UI: fix error messages not displaying
• fix low resolution Spotify artwork
• fix incorrect display of date released pre 1970
• fix for Denon speakers when pausing
• support password authentication for Airplay 2
• support for user config ffmpeg audio filters