Bump calendar-js from `6efebf4` to `92ea677`

Bumps [calendar-js](https://github.com/georgehrke/calendar-js) from `6efebf4` to `92ea677`.
- [Release notes](https://github.com/georgehrke/calendar-js/releases)
- [Commits](https://github.com/georgehrke/calendar-js/compare/6efebf4f1fe280d4dd4da088ac1515d919e41a19...92ea6779121c598eebde9e09b18e05db95c57157

)

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