fix: insufficient permission for dunning error (#26092)

diff --git a/erpnext/accounts/doctype/dunning/dunning.py b/erpnext/accounts/doctype/dunning/dunning.py
index 1a6dbed..c6c6892 100644
--- a/erpnext/accounts/doctype/dunning/dunning.py
+++ b/erpnext/accounts/doctype/dunning/dunning.py
@@ -86,7 +86,7 @@
 	for reference in doc.references:
 		if reference.reference_doctype == 'Sales Invoice' and reference.outstanding_amount <= 0:
 			dunnings = frappe.get_list('Dunning', filters={
-				'sales_invoice': reference.reference_name, 'status': ('!=', 'Resolved')})
+				'sales_invoice': reference.reference_name, 'status': ('!=', 'Resolved')}, ignore_permissions=True)
 
 			for dunning in dunnings:
 				frappe.db.set_value("Dunning", dunning.name, "status", 'Resolved')
@@ -96,7 +96,7 @@
 	grand_total = 0
 	if rate_of_interest:
 		interest_per_year = flt(outstanding_amount) * flt(rate_of_interest) / 100
-		interest_amount = (interest_per_year * cint(overdue_days)) / 365 
+		interest_amount = (interest_per_year * cint(overdue_days)) / 365
 		grand_total = flt(outstanding_amount) + flt(interest_amount) + flt(dunning_fee)
 	dunning_amount = flt(interest_amount) + flt(dunning_fee)
 	return {