windows: bump the node version included in the prebuilt package: 10.16.3 -> 10.18.0
windows: bump the node version included in the prebuilt package: 10.16.3 -> 10.18.0

This is the latest version as of today.

storytouch/etherpad-lite,aptivate/etherpad-lite,aptivate/etherpad-lite,storytouch/etherpad-lite,storytouch/etherpad-lite,joequant/etherpad-lite,ether/etherpad-lite,aptivate/etherpad-lite,ether/etherpad-lite,aptivate/etherpad-lite,joequant/etherpad-lite,ether/etherpad-lite,joequant/etherpad-lite,joequant/etherpad-lite