node: use .xz archives as .gz returns 404

[vlaci]

Installation on Linux fails with the following error:

 * Install prebuilt node (19.8.1) ...
Traceback (most recent call last):
  File "/app/.venv/bin/nodeenv", line 8, in <module>
    sys.exit(main())
  File "/app/.venv/lib/python3.10/site-packages/nodeenv.py", line 1104, in main
    create_environment(env_dir, args)
  File "/app/.venv/lib/python3.10/site-packages/nodeenv.py", line 980, in create_environment
    install_node(env_dir, src_dir, args)
  File "/app/.venv/lib/python3.10/site-packages/nodeenv.py", line 739, in install_node
    install_node_wrapped(env_dir, src_dir, args)
  File "/app/.venv/lib/python3.10/site-packages/nodeenv.py", line 772, in install_node_wrapped
    copy_node_from_prebuilt(env_dir, src_dir, args.node)
  File "/app/.venv/lib/python3.10/site-packages/nodeenv.py", line 665, in copy_node_from_prebuilt
    src_folder, = glob.glob(src_folder_tpl)
ValueError: not enough values to unpack (expected 1, got 0)

tar.gz links like https://nodejs.org/download/release/v19.8.1/node-v19.8.1-linux-x64.tar.gz lead to a 404 page
I don't know if this is just a long outage or what on the nodejs side, but the home page also offers the xz file for download for Linux users
Tried a few random versions, all have this issue.

[tobias-urdin]

This seems to have been a temporary issue with downloading, can see that they are not responding with 404 anymore. The error message from nodeenv is very weird thought and should probably be better for end-users.