use node: prefix for requires

mostly because code is being autogenerated by all the AI stuff using
this prefix. it's also used in the stack trace.

src/network/network-interface.js

@@ -7,10 +7,10 @@ exports = module.exports = {
     testIPv6Config
 };
 
-const assert = require('assert'),
+const assert = require('node:assert'),
     BoxError = require('../boxerror.js'),
     debug = require('debug')('box:network/network-interface'),
-    os = require('os'),
+    os = require('node:os'),
     safe = require('safetydance');
 
 async function getIPv4(config) {