fix: patch failure for vat audit report (#27355)

diff --git a/erpnext/patches/v13_0/add_custom_field_for_south_africa.py b/erpnext/patches/v13_0/add_custom_field_for_south_africa.py
index 96aa547..b34b5c1 100644
--- a/erpnext/patches/v13_0/add_custom_field_for_south_africa.py
+++ b/erpnext/patches/v13_0/add_custom_field_for_south_africa.py
@@ -12,6 +12,7 @@
 		return
 
 	frappe.reload_doc('regional', 'doctype', 'south_africa_vat_settings')
+	frappe.reload_doc('regional', 'report', 'vat_audit_report')
 	frappe.reload_doc('accounts', 'doctype', 'south_africa_vat_account')
 
 	make_custom_fields()