Maintenance: Bump vue-router from 4.0.15 to 4.0.16
Bumps [vue-router](https://github.com/vuejs/router) from 4.0.15 to 4.0.16.
- [Release notes](https://github.com/vuejs/router/releases)
- [Changelog](https://github.com/vuejs/router/blob/main/CHANGELOG.md)
- [Commits](https://github.com/vuejs/router/compare/v4.0.15...v4.0.16)