Bump @vue/cli-plugin-unit-jest from 4.5.7 to 4.5.8

Bumps [@vue/cli-plugin-unit-jest](https://github.com/vuejs/vue-cli/tree/HEAD/packages/@vue/cli-plugin-unit-jest) from 4.5.7 to 4.5.8.
- [Release notes](https://github.com/vuejs/vue-cli/releases)
- [Changelog](https://github.com/vuejs/vue-cli/blob/dev/CHANGELOG.md)
- [Commits](https://github.com/vuejs/vue-cli/commits/v4.5.8/packages/@vue/cli-plugin-unit-jest

)

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