Update dependency mongodb to v6.20.0

Author: renovate[bot]

integration/package-lock.json

@@ -5,7 +5,7 @@
   "dependencies": {
     "amqplib": "0.10.7",
     "mkdirp": "3.0.1",
-    "mongodb": "6.16.0",
+    "mongodb": "6.20.0",
     "supertest": "7.1.0",
     "testcontainers": "10.25.0",
     "rimraf": "6.0.1"