Bump @vue/test-utils from 2.2.0 to 2.3.0 in /doorbell (#286)

Bumps [@vue/test-utils](https://github.com/vuejs/test-utils) from 2.2.0 to 2.3.0.
- [Release notes](https://github.com/vuejs/test-utils/releases)
- [Commits](vuejs/test-utils@v2.2.0...v2.3.0)

---
updated-dependencies:
- dependency-name: "@vue/test-utils"
  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]