cargo-deadlinks: fix build (#353755)

  checkFlags = [

    # uses internet

    "--skip non_existent_http_link --skip working_http_check"

    # makes assumption about HTML paths that changed in rust 1.82.0

    "--skip simple_project::it_checks_okay_project_correctly"

    "--skip cli_args::it_passes_arguments_through_to_cargo"

  ] ++ lib.optional (stdenv.hostPlatform.system != "x86_64-linux")

    # assumes the target is x86_64-unknown-linux-gnu

    "--skip simple_project::it_checks_okay_project_correctly";