chore(deps): Bump @sap/cds from 8.3.1 to 8.4.0 (#262)

Bumps [@sap/cds](https://cap.cloud.sap/) from 8.3.1 to 8.4.0.

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

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>