chore(deps-dev): Bump rdf-test-suite from 1.25.0 to 2.1.4

Bumps [rdf-test-suite](https://github.com/rubensworks/rdf-test-suite.js) from 1.25.0 to 2.1.4.
- [Changelog](https://github.com/rubensworks/rdf-test-suite.js/blob/master/CHANGELOG.md)
- [Commits](rubensworks/rdf-test-suite.js@v1.25.0...v2.1.4)

---
updated-dependencies:
- dependency-name: rdf-test-suite
  dependency-version: 2.1.4
  dependency-type: direct:development
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]