Bump @sap-cloud-sdk/test-util in /samples/cds-sample-application

Bumps [@sap-cloud-sdk/test-util](https://github.com/SAP/cloud-sdk-js) from 3.25.0 to 4.0.1.
- [Release notes](https://github.com/SAP/cloud-sdk-js/releases)
- [Changelog](https://github.com/SAP/cloud-sdk-js/blob/main/CHANGELOG.md)
- [Commits](SAP/cloud-sdk-js@v3.25.0...v4.0.1)

---
updated-dependencies:
- dependency-name: "@sap-cloud-sdk/test-util"
  dependency-type: direct:development
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

samples/cds-sample-application/package-lock.json

@@ -44,7 +44,7 @@
     "@nestjs/cli": "^10.4.9",
     "@nestjs/schematics": "^10.2.3",
     "@nestjs/testing": "^8.4.7",
-    "@sap-cloud-sdk/test-util": "^3.25.0",
+    "@sap-cloud-sdk/test-util": "^4.0.1",
     "@types/express": "^5.0.0",
     "@types/jest": "29.5.14",
     "@types/node": "^22.13.9",