build(deps): bump @intlify/unplugin-vue-i18n in /frontend

Bumps [@intlify/unplugin-vue-i18n](https://github.com/intlify/bundle-tools/tree/HEAD/packages/unplugin-vue-i18n) from 4.0.0 to 5.0.0.
- [Release notes](https://github.com/intlify/bundle-tools/releases)
- [Changelog](https://github.com/intlify/bundle-tools/blob/main/packages/unplugin-vue-i18n/CHANGELOG.md)
- [Commits](https://github.com/intlify/bundle-tools/commits/bundle-utils@5.0.0/packages/unplugin-vue-i18n)

---
updated-dependencies:
- dependency-name: "@intlify/unplugin-vue-i18n"
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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