chore(deps-dev): bump typescript from 5.9.2 to 6.0.3 in /cdk

Bumps [typescript](https://github.com/microsoft/TypeScript) from 5.9.2 to 6.0.3.
- [Release notes](https://github.com/microsoft/TypeScript/releases)
- [Commits](microsoft/TypeScript@v5.9.2...v6.0.3)

---
updated-dependencies:
- dependency-name: typescript
  dependency-version: 6.0.3
  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

@@ -20,7 +20,7 @@
     "prettier": "^3.5.3",
     "ts-jest": "^29.4.4",
     "ts-node": "^10.7.0",
-    "typescript": "^5.9.2"
+    "typescript": "^6.0.3"
   },
   "dependencies": {
     "@aws-appsync/utils": "^1.12.0",