fix: notify update when update outstanding amount - Linters

(cherry picked from commit 198b90eb01)

erpnext/accounts/utils.py

@@ -1709,6 +1709,7 @@ def update_voucher_outstanding(voucher_type, voucher_no, account, party_type, pa
 		ref_doc.set_status(update=True)
 		ref_doc.notify_update()
 
+
 def delink_original_entry(pl_entry, partial_cancel=False):
 	if pl_entry:
 		ple = qb.DocType("Payment Ledger Entry")