roles: The apt cache_valid_time implies update_cache

See: https://docs.ansible.com/ansible/latest/modules/apt_module.html

roles/nginx/tasks/main.yml

@@ -17,7 +17,7 @@
     add_nginx_apt_repository is changed
 
 - name: Install nginx
-  apt: pkg=nginx update_cache=yes state=present
+  apt: pkg=nginx cache_valid_time=3600 state=present
   tags: nginx, packages
 
 - name: Copy nginx.conf