Fix bad delegate_to

oneshot/upgrade-pvc-cluster_deb12.yml

@@ -6,7 +6,7 @@
   become_user: root
   gather_facts: yes
   vars:
-    minimum_pvc_version: 0.9.68
+    minimum_pvc_version: 0.9.69
   tasks:
     - name: check that cluster is on the minimum PVC version or newer
       shell: "dpkg --compare-versions $(pvc --quiet cluster status -f json | jq '.pvc_version' | tr -d '\"') ge {{ minimum_pvc_version }}"
@@ -529,8 +529,7 @@
     - name: set first node as primary coordinator
       command: "pvc node primary --wait"
       run_once: yes
-      delegate_to: "{{ item }}"
-      loop: "{{ ansible_play_hosts[0] }}"
+      delegate_to: "{{ ansible_play_hosts[0] }}"
 
     - name: unset PVC maintenance mode
       command: pvc cluster maintenance off