fix: upgrade @fullcalendar/luxon3 from 6.1.11 to 6.1.15

Snyk has created this PR to upgrade @fullcalendar/luxon3 from 6.1.11 to 6.1.15.

See this package in yarn:
@fullcalendar/luxon3

See this project in Snyk:
https://app.snyk.io/org/okeamah/project/8bd7b66f-237f-437a-8926-60e74ab34a01?utm_source=github&utm_medium=referral&page=upgrade-pr

package.json

@@ -13,7 +13,7 @@
     "@fullcalendar/icalendar": "6.1.11",
     "@fullcalendar/interaction": "6.1.11",
     "@fullcalendar/list": "6.1.11",
-    "@fullcalendar/luxon3": "6.1.11",
+    "@fullcalendar/luxon3": "6.1.15",
     "@fullcalendar/timegrid": "6.1.11",
     "@fullcalendar/vue3": "6.1.11",
     "@popperjs/core": "2.11.8",