Adjust matrix-synapse-s3-storage-provider-migrate.{service,timer} permissions

Fixes https://github.com/spantaleev/matrix-docker-ansible-deploy/issues/3917

roles/custom/matrix-synapse/tasks/ext/s3-storage-provider/setup_install.yml

@@ -43,7 +43,7 @@
   ansible.builtin.template:
     src: "{{ role_path }}/templates/synapse/ext/s3-storage-provider/systemd/{{ item }}.j2"
     dest: "{{ devture_systemd_docker_base_systemd_path }}/{{ item }}"
-    mode: 0640
+    mode: 0644
   with_items:
     - matrix-synapse-s3-storage-provider-migrate.service
     - matrix-synapse-s3-storage-provider-migrate.timer