Bump @nextcloud/router from 1.1.0 to 1.2.0

Bumps [@nextcloud/router](https://github.com/nextcloud/nextcloud-router) from 1.1.0 to 1.2.0.
- [Release notes](https://github.com/nextcloud/nextcloud-router/releases)
- [Changelog](https://github.com/nextcloud/nextcloud-router/blob/master/CHANGELOG.md)
- [Commits](https://github.com/nextcloud/nextcloud-router/compare/v1.1.0...v1.2.0

)

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