meson: Split single-line dependencies to reduce the diff on changes

Make it more readable and in case we add something else, it's easier to track

demo/meson.build

@@ -9,7 +9,10 @@ datadir = join_paths(prefix, get_option('datadir'))
 
 executable('gtk-libfprint-test',
     [ 'gtk-libfprint-test.c', gtk_test_resources ],
-    dependencies: [ libfprint_dep, gtk_dep ],
+    dependencies: [
+        gtk_dep,
+        libfprint_dep,
+    ],
     c_args: '-DPACKAGE_VERSION="' + meson.project_version() + '"',
     install: true,
     install_dir: bindir)