internal/rosa: populate runtime dependencies

This also removes manually resolved indirect dependencies.

Signed-off-by: Ophestra <cat@gensokyo.uk>

internal/rosa/gtk.go

@@ -56,6 +56,12 @@ func init() {
 		Description: "the GNU library of miscellaneous stuff",
 		Website:     "https://developer.gnome.org/glib/",
 
+		Dependencies: P{
+			PCRE2,
+			Libffi,
+			Zlib,
+		},
+
 		ID: 10024,
 	}
 }