WTF, you expect me to ... gasp ... read, are you serious? why?
I have unattended upgrades setup 3 times in case the first 2 fail, when I say "Yes" I mean Yes
apt full-upgrade --assume-yes x3 --enforce holds --overwrite --assume-yes if not --burn harddrive --assume-yes
This script.sh has never failed me, the hell with a cron job
just to make sure
dpkg-reconfigure -plow unattended-upgrades