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/database.js

@@ -12,11 +12,11 @@ exports = module.exports = {
     _clear: clear
 };
 
-const assert = require('assert'),
+const assert = require('node:assert'),
     BoxError = require('./boxerror.js'),
     constants = require('./constants.js'),
     debug = require('debug')('box:database'),
-    execSync = require('child_process').execSync,
+    execSync = require('node:child_process').execSync,
     mysql = require('mysql2/promise'),
     safe = require('safetydance'),
     shell = require('./shell.js')('database');