That's a great idea!
That's a great idea!
TL,DR; yes
Long answer: RTFM ๐
In 50unattended-upgrades you can specify
Unattended-Upgrade::Automatic-Reboot and even Unattended-Upgrade::Automatic-Reboot-Time
See https://github.com/mvo5/unattended-upgrades/blob/master/README.md#supported-options-reference