[chirp_users] Can't install on Ubuntu 23.04

[Dan Smith]

> Same problem here - will not install on 23.04 as written:
> 
>   $ sudo apt install git python3-wxgtk4.0 python3-serial python3-six python3-future python3-requests python3-pip pipx
> cd into_the_directory_with_the_whl_file_I_downloaded
>   $ pipx install --system-site-packages ./chirp-20230507-py3-none-any.whl

I just updated the docs on the site, but they are exactly this. And it works for me, as expected, on 23.04. Of course just saying "will not install" doesn't give us anything to go on. We need an error or reason to help you.

--Dan