chore(deps): Bump mongoose in integration tests (#19175)

- The OTel instrumentation supports mongoose >=5.9.7 <9, so 6.x is fully
supported
- Our test usage is basic (connect, Schema, model, save, findOne) with
no breaking API changes between 5.x and 6.x
  - Mongoose 5.x is EOL and won't receive security patches

https://github.com/getsentry/sentry-javascript/security/dependabot/1046
ref #19170
Closes #19176 (added automatically)

Author: chargome

dev-packages/node-integration-tests/package.json

@@ -63,7 +63,7 @@
     "lru-memoizer": "2.3.0",
     "mongodb": "^3.7.3",
     "mongodb-memory-server-global": "^10.1.4",
-    "mongoose": "^5.13.22",
+    "mongoose": "^6.13.6",
     "mysql": "^2.18.1",
     "mysql2": "^3.11.3",
     "nock": "^13.5.5",