Merge pull request #307440 from vcunat/p/knot-service

nixos/knot: use a more precise type for .settings

nixos/modules/services/networking/knot.nix

···
       };
 
       settings = mkOption {
-        type = types.submodule { freeformType = types.attrs; };
+        type = (pkgs.formats.yaml {}).type;
         default = {};
         description = ''
           Extra configuration as nix values.