highlight: 4.17 -> 4.18 (#460916)

let

  self = stdenv.mkDerivation rec {

    pname = "highlight";

    version = "4.17";

    version = "4.18";

    src = fetchFromGitLab {

      owner = "saalen";

      repo = "highlight";

      rev = "v${version}";

      hash = "sha256-XSfiQGMd7GtewyZ72VK/0D9Z9sYzVBWeO1CQXVk63Zc=";

      hash = "sha256-QYW6kj5cp+TVLXwj7kxbgj0kpN0n5qXYU3xZ5UW66vc=";

    };

    enableParallelBuilding = true;