refactor: update Ansible tasks to use fully qualified module names for Flatpak management

config/ansible/tasks/flatpaks.yml

@@ -5,12 +5,12 @@
     state: present
 
 - name: Get list of installed Flatpaks
-  command: flatpak list --app --columns=application
+  ansible.builtin.command: flatpak list --app --columns=application
   register: installed_flatpaks
   changed_when: false
 
 - name: Define desired Flatpaks
-  set_fact:
+  ansible.builtin.set_fact:
     desired_flatpaks:
       - org.fkoehler.KTailctl
       - org.mozilla.Thunderbird