chore(deps-dev): Bump @types/node in /examples/node-postgres

Bumps [@types/node](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/node) from 20.9.0 to 25.5.2.
- [Release notes](https://github.com/DefinitelyTyped/DefinitelyTyped/releases)
- [Commits](https://github.com/DefinitelyTyped/DefinitelyTyped/commits/HEAD/types/node)

---
updated-dependencies:
- dependency-name: "@types/node"
  dependency-version: 25.5.2
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

examples/node-postgres/package-lock.json

@@ -12,6 +12,6 @@
     "postgres": "^3.4.3"
   },
   "devDependencies": {
-    "@types/node": "^20.9.0"
+    "@types/node": "^25.5.2"
   }
 }