Run flatpak with exported variables

https://github.com/flatpak/flatpak/issues/3847#issuecomment-818532856

roles/flatpak/tasks/main.yml

@@ -7,17 +7,18 @@
   ansible.builtin.include: flatpaks.yml
   when: flatpak_alter_flatpaks | bool
 
+# https://github.com/flatpak/flatpak/issues/3847#issuecomment-818532856
 - name: Enable flatpak Automatic Update
-  ansible.builtin.copy:
+  ansible.builtin.template:
     src: "{{ item }}"
-    dest: "/etc/systemd/system/{{ item }}"
+    dest: "/etc/systemd/system/{{ item | regex_replace('.j2', '') }}"
     owner: root
     group: root
     mode: '0644'
   become: yes
   with_items:
-    - flatpak-automatic.service
-    - flatpak-automatic.timer
+    - flatpak-automatic.service.j2
+    - flatpak-automatic.timer.j2
   notify:
     - Enable flatpak-automatic
   when: flatpak_automatic_updates | bool