Fixed some lint suggestions

roles/enable-cgroup-v2/tasks/main.yml

@@ -1,9 +1,10 @@
 - name: Check if cgroup v2 is available
   ansible.builtin.command: grep cgroup2 /proc/filesystems
   register: cgroup2_present
+  changed_when: cgroup2_present.rc != 0
 
 - name: Enable cgroup v2
   ansible.builtin.command: 'grubby --update-kernel=ALL --add-args="systemd.unified_cgroup_hierarchy=1"'
   become: true
   when:
-    - cgroup2_present.rc != 0
+    - cgroup2_present.rc != 0