Fix Nginx Proxy Manager logrotate user

Logs are not rotated and services freeze/die because disk is full. This happens because `npm` user/group doesn't exist and `logrotate.service` can't start.

ct/nginxproxymanager.sh

@@ -168,6 +168,7 @@ EOF
 
   msg_info "Starting Services"
   sed -i 's/user npm/user root/g; s/^pid/#pid/g' /usr/local/openresty/nginx/conf/nginx.conf
+  sed -i 's/su npm npm/su root root/g' /etc/logrotate.d/nginx-proxy-manager
   sed -i 's/include-system-site-packages = false/include-system-site-packages = true/g' /opt/certbot/pyvenv.cfg
   systemctl enable -q --now openresty
   systemctl enable -q --now npm