Fix swapfile permissions

Forgot to add "become: yes"

playbooks/manjaro.yaml

@@ -355,6 +355,7 @@
     file:
       state: absent
       path: "{{ swap_file_path }}"
+    become: yes
   - name: Create swap file
     command: truncate -s 0 "{{ swap_file_path }}"
              creates="{{ swap_file_path }}"