Ubuntu 18.04.6 LTSわよ
1 update can be applied immediately.
1 of these updates is a standard security update.
$ sudo apt update && apt list --upgradable
libexpat1/bionic-updates,bionic-security 2.2.5-3ubuntu0.7 amd64 [upgradable from: 2.2.5-3ubuntu0.4]
sosreport/bionic-updates 4.3-1ubuntu0.18.04.1 amd64 [upgradable from: 4.1-1ubuntu0.18.04.3]
$ sudo apt dist-upgrade -y
$ cat /var/run/reboot-required*
cat: '/var/run/reboot-required*': No such file or directory
ヨシ