fix(system-upgrade): remove version duplication from kubernetes deployment

infrastructure/system-upgrades/kubernetes.yaml

@@ -6,7 +6,6 @@ metadata:
   namespace: system-upgrade
 type: Opaque
 stringData:
-  kubernetes-version: "1.23"
   disable-distro-updates.sh: |
     #!/bin/bash
     set -e
@@ -19,7 +18,7 @@ stringData:
     set -x
     secrets="$(dirname "$0")"
     systemd-run --same-dir --wait --collect --service-type=exec dnf install -y dnf-plugins-core
-    systemd-run --same-dir --wait --collect --service-type=exec dnf copr enable -y "sheogorath/kubernetes-$(cat $secrets/kubernetes-version)"
+    systemd-run --same-dir --wait --collect --service-type=exec dnf copr enable -y "sheogorath/kubernetes-$(echo "$SYSTEM_UPGRADE_PLAN_LATEST_VERSION" | grep -Poe "\d+\.\d+")"
   upgrade-kubeadm.sh: |
     #!/bin/bash
     set -e