fix: journal auditing voucher print date to use posting_date

(cherry picked from commit 43e2495)

Author: Tom-1508

erpnext/accounts/print_format/journal_auditing_voucher/journal_auditing_voucher.html

@@ -17,7 +17,7 @@
             </div>
             <div class="col-xs-6">
                 <table>
-                    <tr><td><strong>Date: </strong></td><td>{{  frappe.utils.format_date(doc.creation)  }}</td></tr>
+                    <tr><td><strong>Date: </strong></td><td>{{  frappe.utils.format_date(doc.posting_date)  }}</td></tr>
                 </table>
             </div>
     </div>