prioritize IPv6 addresses

one day i will have a v6 only network an i wll be sooooooo happy

modules/basic.nix

···
     nftables.enable = true;
     useNetworkd = true;
     nameservers = [
+      "2620:fe::fe"
+      "2620:fe::9"
       "9.9.9.9"
       "149.112.112.112"
-      "2620:fe::fe"
-      "2620:fe::9"
     ];
   };