Bump @types/node from 20.11.6 to 25.5.2 in /cdk

Bumps [@types/node](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/node) from 20.11.6 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]

cdk/package-lock.json

@@ -13,7 +13,7 @@
   },
   "devDependencies": {
     "@types/jest": "^30.0.0",
-    "@types/node": "^20.11.6",
+    "@types/node": "^25.5.2",
     "aws-cdk": "2.1117.0",
     "aws-cdk-local": "^3.0.4",
     "jest": "^30.3.0",