Fix incorrectly named module arguments (ansible.builtin.group -> group)

Regression since the mass-replace in 34cdaade0.

Fixes https://github.com/spantaleev/matrix-docker-ansible-deploy/issues/2054

roles/matrix-synapse/tasks/import_media_store.yml

@@ -57,7 +57,7 @@
     delete: true
     # It's wasteful to preserve owner/group now. We chown below anyway.
     owner: false
-    ansible.builtin.group: false
+    group: false
     times: true
   delegate_to: "{{ inventory_hostname }}"