Fix illegal octal number representation

roles/cockpit/tasks/main.yml

@@ -28,7 +28,7 @@
     dest: /etc/cockpit/cockpit.conf
     owner: root
     group: root
-    mode: 0644
+    mode: "0644"
 
 # https://cockpit-project.org/faq.html#error-message-about-being-offline
 - name: Allow NetworkManager to manage network interfaces

roles/podman/tasks/main.yml

@@ -77,7 +77,7 @@
     remote_src: true
     src: /usr/share/containers/containers.conf
     dest: /etc/containers/containers.conf
-    mode: 0644
+    mode: "0644"
 
 - name: Set podman default subnet into small /24 networks
   become: true