Update Grafana Enterprise to the latest version

My Question is, how can I update my Grafana Instance to the latest version.
I first had version 8.3.3. then I ran the command “sudo apt upgrade” and “grafana-cli plugins update-all” and finally a reboot then Grafana was on version 9.2.3.
But the latest version is 9.3.6 (2023-01-26). Why is this version not installed?

What Grafana version and what operating system are you using?
Linux Ubuntu 20.04.5