Update voucher deadline (#1289)

Author: clytaemnestra

src/content/pages/sponsorship/information.mdx

@@ -78,7 +78,7 @@ Please follow the instructions in that email carefully and complete the purchase
   - Click the order URL provided in the email.
   - Amend the attendee information accordingly.
 
-**⏲️ Deadline** to register and assign your passes: **Sunday, 8 June, 2025**
+**⏲️ Deadline** to register and assign your passes: **Sunday, 22 June, 2025**
 
 
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