fix: do not use uuid library

Author: andris9

lib/acme-challenge.js

@@ -3,7 +3,7 @@
 const { normalizeDomain } = require('./tools');
 const { Settings } = require('./settings');
 const msgpack = require('msgpack5')();
-const { v4: uuid } = require('uuid');
+const crypto = require('crypto');
 
 // Unfinished challenges are deleted after this amount of time
 const DEFAULT_TTL = 2 * 3600 * 1000; // milliseconds
@@ -17,7 +17,7 @@ class AcmeChallenge {
         this.config = config;
         const { redis, ttl, namespace } = this.config;
 
-        this.uuid = uuid();
+        this.uuid = crypto.randomUUID();
         this.redis = redis;
         this.ttl = ttl || DEFAULT_TTL;