New comment by biopsin on void-packages repository

https://github.com/void-linux/void-packages/pull/26833#issuecomment-749203873

Comment:
Only way to satisfy "Run-time dependency vapigen found: YES 0.50.0" when cross build 
is adding vala-devel to makedepends too
```

if [ "$CROSS_BUILD" ]; then
	makedepends+=" vala-devel" 
fi
```

Edit : bump babl to 0.1.84