remove uuid module

built into node.js now

src/users.js

@@ -100,7 +100,6 @@ const appPasswords = require('./apppasswords.js'),
     translations = require('./translations.js'),
     uaParser = require('ua-parser-js'),
     userDirectory = require('./user-directory.js'),
-    uuid = require('uuid'),
     superagent = require('@cloudron/superagent'),
     util = require('util'),
     validator = require('./validator.js'),
@@ -257,7 +256,7 @@ async function add(email, data, auditSource) {
     if (pbkdf2Error) throw new BoxError(BoxError.CRYPTO_ERROR, pbkdf2Error);
 
     const user = {
-        id: 'uid-' + uuid.v4(),
+        id: 'uid-' + crypto.randomUUID(),
         username,
         email,
         fallbackEmail,