Bump ember-qunit from 8.0.2 to 8.1.0 (#946)

Bumps [ember-qunit](https://github.com/emberjs/ember-qunit) from 8.0.2 to 8.1.0.
- [Release notes](https://github.com/emberjs/ember-qunit/releases)
- [Commits](emberjs/ember-qunit@v8.0.2...v8.1.0)

---
updated-dependencies:
- dependency-name: ember-qunit
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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Author: dependabot[bot]