audio/ncspot: update to 0.8.1

0.8.1
-Release 0.8.0 had a minor bug which could result in a compilation error for
non-default build configurations, e.g. if notifications are disabled. 0.8.1
fixes this.

0.8.0
Maintenance:
-Show album art when playing 'similar tracks' (#354)
-Don't panic if user quits login process (#479)
-Handle commands (e.g. h, j, k l) in select artist modal (#560)

Features:
-Make command key configurable (#487)
-Add album cover to notification (#563)
-Add command line flag for custom config filename (#565)

(pin)