fix: upgrade mongodb from 6.5.0 to 6.11.0

Snyk has created this PR to upgrade mongodb from 6.5.0 to 6.11.0.

See this package in npm:
mongodb

See this project in Snyk:
https://app.snyk.io/org/guardian-y7t/project/64e6c9f0-8136-4f80-bbfd-85a42218ad81?utm_source=github&utm_medium=referral&page=upgrade-pr

application-events/package.json

@@ -33,7 +33,7 @@
         "express": "^4.17.3",
         "http-errors": "^2.0.0",
         "js-yaml": "^4.1.0",
-        "mongodb": "6.5.0",
+        "mongodb": "6.11.0",
         "mongoose": "^6.10.0",
         "morgan": "^1.10.0",
         "nats": "^2.12.1",