[lenovo-wwan-dpr] Changing "strict" confined snap to "classic" confined snap

just to clear this up, bootstrapping/´re-exec´ newer snapd via snap does not work on fedora.

@nitin_exclusively If one needs a newer snapd version, they have to bother the maintainer mborzecki1 (see the link below). The newest version available is currently 2.58.3 :