Bump calendar-js from `cf6d118` to `2ed788a`

Bumps [calendar-js](https://github.com/georgehrke/calendar-js) from `cf6d118` to `2ed788a`.
- [Release notes](https://github.com/georgehrke/calendar-js/releases)
- [Commits](https://github.com/georgehrke/calendar-js/compare/cf6d118719d8a915fa468a2370dc3941232bb2fa...2ed788a89947a3223931eb30296bcf3823c6ab0f

)

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