Add agenda item for apidays NYC (#133)

It's still very early but it's coming up!

Author: martinbonnin

agendas/2025/11-Nov/13-community-working-group-november-2025.md

@@ -38,3 +38,4 @@
 1. Review agenda (2m, Host)
 1. Check for [ready for review agenda items](https://github.com/graphql/community-wg/issues?q=is%3Aissue+is%3Aopen+label%3A%22Ready+for+review+%F0%9F%99%8C%22+sort%3Aupdated-desc) (5m, Host)
 1. Reminder: [grants available for key initiatives](https://graphql.org/community/foundation/community-grant/) (1m, Host)
+1. apidays NYC (5min, Martin)