Fix: disable ncspot default features for xtask

Pulling in ncspot without disabling default features includes a lot of
unnecessary dependencies, i.e. audio backends including dynamic linkage to
`libpulse`. As it's not required for `xtask` we should disable default features,
resulting in a much smaller binary.

xtask/Cargo.toml

@@ -11,4 +11,5 @@ clap_complete = "4.1.4"
 clap = "4.1.6"
 
 [dependencies.ncspot]
+default-features = false
 path = ".."