chore(deps): update @fullcalendar/list requirement in /src

Updates the requirements on [@fullcalendar/list](https://github.com/fullcalendar/fullcalendar/tree/HEAD/packages/list) to permit the latest version.
- [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/v6.1.15/packages/list)

---
updated-dependencies:
- dependency-name: "@fullcalendar/list"
  dependency-type: direct:production
...

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

src/package.json

@@ -8,7 +8,7 @@
         "@fullcalendar/core": "^6.1.15",
         "@fullcalendar/daygrid": "^6.1.14",
         "@fullcalendar/interaction": "^6.1.15",
-        "@fullcalendar/list": "^6.1.14",
+        "@fullcalendar/list": "^6.1.15",
         "@fullcalendar/react": "^6.1.15",
         "@fullcalendar/rrule": "^6.1.15",
         "@fullcalendar/timegrid": "^6.1.15",