Update Global Error Subscribers
Replaces the list of email addresses subscribed to global sync error notifications for the caller's organization.
This is a **full replacement** — the request body becomes the complete
subscriber list. To add or remove a single address without affecting others,
fetch the current list with
[`GET /api/notifications/global-error-subscribers`](../../../api-reference/notifications/get-global-error-subscribers), apply your change,
and send the modified list back.
