Bump @nextcloud/calendar-js from 3.0.0 to 3.1.0

Bumps [@nextcloud/calendar-js](https://github.com/nextcloud/calendar-js) from 3.0.0 to 3.1.0.
- [Release notes](https://github.com/nextcloud/calendar-js/releases)
- [Changelog](https://github.com/nextcloud/calendar-js/blob/main/CHANGELOG.md)
- [Commits](https://github.com/nextcloud/calendar-js/compare/v3.0.0...v3.1.0

)

---
updated-dependencies:
- dependency-name: "@nextcloud/calendar-js"
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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