LFS258: new version available (9.5.2023)

so im trying to finish a lab i started a few months ago i see that there was an update to the course but i am running into this issue when trying to do Lab 4

ubuntu@ip-172-31-85-189:~$ sudo apt-get update && sudo apt-get install -y kubelet=1.28.2-00 kubectl=1.28.2-00
Hit:1 http://us-east-1.ec2.archive.ubuntu.com/ubuntu focal InRelease
Hit:2 http://us-east-1.ec2.archive.ubuntu.com/ubuntu focal-updates InRelease                    
Hit:3 http://us-east-1.ec2.archive.ubuntu.com/ubuntu focal-backports InRelease                  
Hit:4 http://security.ubuntu.com/ubuntu focal-security InRelease                                
Hit:6 https://download.docker.com/linux/ubuntu focal InRelease                                  
Hit:5 https://packages.cloud.google.com/apt kubernetes-xenial InRelease
Reading package lists... Done
Reading package lists... Done
Building dependency tree       
Reading state information... Done
kubectl is already the newest version (1.28.2-00).
kubelet is already the newest version (1.28.2-00).
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
ubuntu@ip-172-31-85-189:~$ sudo kubeadm upgrade plan
[upgrade/config] Making sure the configuration is correct:
[upgrade/config] Reading configuration from the cluster...
[upgrade/config] FYI: You can look at this config file with 'kubectl -n kube-system get cm kubeadm-config -o yaml'
[upgrade/config] FATAL: this version of kubeadm only supports deploying clusters with the control plane version >= 1.27.0. Current version: v1.26.1
To see the stack trace of this error execute with --v=5 or higher

I dont understand what i need to update to get the upgrade plan command to work please advise