sparrow-unwrapped: fix update script

pkgs/applications/blockchains/sparrow/default.nix

···
   };
 in
 stdenv.mkDerivation rec {
-  inherit pname version src;
+  inherit version src;
+  pname = "sparrow-unwrapped";
   nativeBuildInputs = [ makeWrapper copyDesktopItems ];
 
   desktopItems = [

pkgs/applications/blockchains/sparrow/update.sh

···
 sha256=$(nix-prefetch-url --type sha256 "file://$PWD/$depname")
 popd
 
-update-source-version sparrow "$version" "$sha256"
+update-source-version sparrow-unwrapped "$version" "$sha256"