chore(deps-dev): Bump @sap/cds-dk from 8.6.1 to 8.7.0

Bumps [@sap/cds-dk](https://cap.cloud.sap/) from 8.6.1 to 8.7.0.

---
updated-dependencies:
- dependency-name: "@sap/cds-dk"
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]