Bump the fullcalendar group in /frontend with 1 update

Bumps the fullcalendar group in /frontend with 1 update: [@fullcalendar/interaction](https://github.com/fullcalendar/fullcalendar/tree/HEAD/packages/interaction).

- [Release notes](https://github.com/fullcalendar/fullcalendar/releases)
- [Changelog](https://github.com/fullcalendar/fullcalendar/blob/main/CHANGELOG.md)
- [Commits](https://github.com/fullcalendar/fullcalendar/commits/v6.1.9/packages/interaction)

---
updated-dependencies:
- dependency-name: "@fullcalendar/interaction"
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: fullcalendar
...

Signed-off-by: dependabot[bot] <[email protected]>