opentofu: update calls to substituteInPlace

    postConfigure = ''

      # speakeasy hardcodes /bin/stty https://github.com/bgentry/speakeasy/issues/22

      substituteInPlace vendor/github.com/bgentry/speakeasy/speakeasy_unix.go \

        --replace "/bin/stty" "${coreutils}/bin/stty"

        --replace-fail "/bin/stty" "${coreutils}/bin/stty"

    '';

    nativeBuildInputs = [ installShellFiles ];