Fix lint warnings and errors with ansible-lint 6.6.0

The warnings are not all from the ansible-lint 6.5.0 -> 6.6.0 upgrade but the errors are.

roles/archusers/tasks/main.yml

@@ -8,7 +8,7 @@
   with_dict: "{{ arch_users }}"
 
 - name: Create Arch Linux-specific users
-  user:
+  ansible.builtin.user:
     name: "{{ item.key }}"
     group: users
     groups: "{{ item.value.groups | join(',') }}"