chore(deps): bump pg from 8.17.1 to 8.18.0 in /reference-apps/nodejs

Bumps [pg](https://github.com/brianc/node-postgres/tree/HEAD/packages/pg) from 8.17.1 to 8.18.0.
- [Changelog](https://github.com/brianc/node-postgres/blob/master/CHANGELOG.md)
- [Commits](https://github.com/brianc/node-postgres/commits/pg@8.18.0/packages/pg)

---
updated-dependencies:
- dependency-name: pg
  dependency-version: 8.18.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

reference-apps/nodejs/package-lock.json

@@ -32,7 +32,7 @@
     "mongodb": "^7.0.0",
     "mysql2": "^3.16.1",
     "node-vault": "^0.10.2",
-    "pg": "^8.17.1",
+    "pg": "^8.18.0",
     "prom-client": "^15.1.0",
     "redis": "^5.10.0",
     "uuid": "^9.0.1",