chore: bump version

* ☑️ Tasks! See tasks with a due date directly in the calendar

* 🙈 **We’re not reinventing the wheel!** Based on the great [c-dav library](https://github.com/nextcloud/cdav-library), [ical.js](https://github.com/mozilla-comm/ical.js) and [fullcalendar](https://github.com/fullcalendar/fullcalendar) libraries.

	]]></description>

	<version>4.7.13</version>

	<version>4.7.13+murena-20250822</version>

	<licence>agpl</licence>

	<author>Anna Larch</author>

	<author homepage="https://github.com/nextcloud/groupware">Nextcloud Groupware Team</author>