build(deps-dev): bump storybook-addon-mock in /varfish/vueapp (#1599)

Bumps [storybook-addon-mock](https://github.com/nutboltu/storybook-addon-mock) from 4.3.0 to 5.0.0.
- [Release notes](https://github.com/nutboltu/storybook-addon-mock/releases)
- [Commits](linearlabs-workspace/storybook-addon-mock@4.3.0...5.0.0)

---
updated-dependencies:
- dependency-name: storybook-addon-mock
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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