Fix "Forbidden implicit octal value" lint errors

roles/nsd/tasks/main.yml

@@ -3,7 +3,7 @@
   ansible.builtin.copy:
     dest: "{{ tls_private }}/{{ nsd_server }}.key"
     src: "{{ item }}"
-    mode: 0600
+    mode: "0600"
     owner: root
     group: "{{ ansible_wheel }}"
   with_first_found:
@@ -17,7 +17,7 @@
   ansible.builtin.copy:
     dest: "{{ tls_certs }}/{{ nsd_server }}.crt"
     src: "{{ item }}"
-    mode: 0644
+    mode: "0644"
     owner: root
     group: "{{ ansible_wheel }}"
   with_first_found:
@@ -31,7 +31,7 @@
   ansible.builtin.template:
     src: nsd.conf.j2
     dest: /var/nsd/etc/nsd.conf
-    mode: 0640
+    mode: "0640"
     owner: root
     group: _nsd
   notify: Restart nsd
@@ -40,7 +40,7 @@
   ansible.builtin.copy:
     dest: "/var/nsd/zones/master/{{ item | replace('/', '-') }}"
     src: "/srv/dns/{{ item | replace('/', '-') }}"
-    mode: 0640
+    mode: "0640"
     owner: root
     group: _nsd
   tags: dns