Update expiration date for zero budget changes (#58479)

Author: holly-kassel

data/reusables/copilot/zero-budget-changes.md

@@ -1,12 +1,12 @@
-<!-- expires 2026-01-10 -->
+<!-- expires 2026-01-17 -->
 <!-- Check with HC on whether or not references to this reusable can be deleted.
 See pr 57549 for details. -->
 
 Accounts created **before August 22, 2025** have a default $0 budget for {% data variables.product.prodname_copilot_short %} premium requests. Premium requests over the allowance are rejected unless you edit or delete this budget.
 
 > [!IMPORTANT]
-> **Beginning November 18, 2025:**
+> **Beginning December 2, 2025:**
 >
 > **Account-level $0 {% data variables.product.prodname_copilot_short %} premium request budgets** for {% data variables.product.prodname_enterprise %} and {% data variables.product.prodname_team %} will be removed. See [Upcoming removal of Copilot premium request $0 budgets for enterprise and team accounts](https://github.blog/changelog/2025-09-17-upcoming-removal-of-copilot-premium-request-0-budgets-for-enterprise-and-team-accounts/) in the {% data variables.product.github %} changelog.
 
-<!-- end expires 2026-01-10 -->
+<!-- end expires 2026-01-17 -->