Release v6.27.8

• [fix] Ignore closed sales order in credit limit validation
• [fix] Fixed pending so items for material request report
• [fix] Prevent from directly creating payment request
• [fix] Get average selling rate based on group by
• [Fix] Default letter head
• [fix] Set actual qty onload of the draft stock entry. Fixed #5172
• Currency column in AR/AP and sales/purchase register report
• [fix] apply Tax Rule for lead
• Fixed setup wizard
• [fix] Use for shopping cart validation in Tax Rule
• Removed education as a domain in ERPNext setup wizard
• [fix] bench init using correct frappe branch