Fix GH Action installing kubernetes

Newest GH Action Worker images already contain kubernetes repository
key, gpg complains when output file exists.
kubectl in 1.28 version is also avaiailable, we have to first
remove it to install our desired version.

.github/actions/setup-kubernetes/action.yaml

@@ -83,13 +83,14 @@ runs:
       sudo apt-get update
       sudo apt-get install -y --no-install-recommends conntrack socat ebtables
       
-      curl -fsSL https://pkgs.k8s.io/core:/stable:/v${KUBERNETES_VERSION_SHORT}/deb/Release.key | sudo gpg --dearmor -o /etc/apt/keyrings/kubernetes-apt-keyring.gpg
       echo "deb [signed-by=/etc/apt/keyrings/kubernetes-apt-keyring.gpg] https://pkgs.k8s.io/core:/stable:/v${KUBERNETES_VERSION_SHORT}/deb/ /" | sudo tee /etc/apt/sources.list.d/kubernetes.list
       sudo apt-get update
       
       # Remove conflicting packages (also removes podman).
       sudo apt-get remove containernetworking-plugins
       
+      sudo apt-get remove kubelet kubeadm kubectl
+      sudo apt-get autoremove
       sudo apt-get install -y --no-install-recommends kubelet="${KUBERNETES_PKG_VERSION}" kubeadm="${KUBERNETES_PKG_VERSION}" kubectl="${KUBERNETES_PKG_VERSION}"
 
       # Podman got wiped by removing `containernetworking-plugins` so we have to install it from the new repo.