Add updated ticket registrations to event tracking sheet

Registration updates leave attendee lists stale, causing check‑in slowdowns. Log updates to a shared tracking sheet so coordinators have accurate rosters before check‑in.

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Overview

When attendee records change close to the event, registration teams often scramble to reconcile lists at the door. This flow writes every registrant update into a shared tracking sheet so coordinators have accurate rosters within minutes ahead of check‑in.