Bump karma-qunit from 4.1.2 to 4.2.0 (#285)

Bumps [karma-qunit](https://github.com/karma-runner/karma-qunit) from 4.1.2 to 4.2.0.
- [Release notes](https://github.com/karma-runner/karma-qunit/releases)
- [Commits](karma-runner/karma-qunit@v4.1.2...v4.2.0)

---
updated-dependencies:
- dependency-name: karma-qunit
  dependency-type: direct:development
  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>

Author: dependabot[bot]