Make sure sce_cfg_group is a system group

roles/install/tasks/main.yml

@@ -24,6 +24,7 @@
 - name: Create group for managing rootless Podman environments
   ansible.builtin.group:
     name: "{{ sce_cfg_group }}"
+    system: true
     state: present
 
 - name: Add config management (Ansible) user to the rootless Podman managing group