polkadot: 2412-3 -> 2412-4 (#395145)

in

rustPlatform.buildRustPackage rec {

  pname = "polkadot";

  version = "2412-3";

  version = "2412-4";

  src = fetchFromGitHub {

    owner = "paritytech";

    repo = "polkadot-sdk";

    rev = "polkadot-stable${version}";

    hash = "sha256-Bsy6CUDxtm5atkpp03edzWtZYuDKFdtBG6wfr+NPkng=";

    hash = "sha256-MYv/3bpERjceBzQxR+NkbaRJZegzkJY0fN6TaF2xn8I=";

    # the build process of polkadot requires a .git folder in order to determine

    # the git commit hash that is being built and add it to the version string.

  '';

  useFetchCargoVendor = true;

  cargoHash = "sha256-9irbcL7wBlwYkWM5goLZx6AAFCOjMSEbZ+Va69Am3pc=";

  cargoHash = "sha256-pvB507k3eYfz8tpTaVUzJOIKvtWEckaMu3Eux89V0uE=";

  buildType = "production";

  buildAndTestSubdir = "polkadot";