audio/ampache: Update to 5.5.7

Keep the original mime and bitrate on song objects instead of the
transcoded value

Spotify art collector (AGAIN)
get_now_playing has_access check
Malformed HTML for regular users in preferences sidebar
Missing translation on preferences sidebar
Default catalog_filter group could be missing on a new install
Gather genre tags when not an array
Display webp images
Check for a valid image extensions when uploading art
Templates for squashed branch with a default path

Many other fixes, see https://github.com/ampache/ampache/releases