graphhopper: fix and enable strictDeps (#414587)

pkgs/by-name/gr/graphhopper/package.nix

···
 
   version = version.patch;
 
-  buildInputs = [
+  nativeBuildInputs = [
     makeWrapper
     maven
   ];
+
+  strictDeps = true;
 
   configurePhase = ''
     runHook preConfigure