after installing libseccomp on ubuntu 20.04 LTS my host would not reboot

systemd on focal is using new function seccomp_api_get... which requires libseccomp 2.4 or above

https://github.com/seccomp/libseccomp/releases/tag/v2.4.0

Issue shows up with:
/lib/systemd/libsystemd-shared-243.so: undefined symbol: seccomp_api_get

suggested resolution, move up version of libseccomp > 2.4 to provide seccomp_api_get used by systemd