fixed data Put in UpdateOrder again with bytes buffer

snipcart/snipcart.go

@@ -1,6 +1,7 @@
 package snipcart
 
 import (
+	"bytes"
 	"encoding/base64"
 	"encoding/json"
 	"errors"
@@ -139,7 +140,11 @@ func (o *SnipcartOrder) TokenPNGBase64() (string, error) {
 }
 
 func (s *SnipcartProvider) UpdateOrder(orderUpdate *SnipcartOrderUpdate) (*SnipcartOrder, error) {
-	response, err := helper.Put(orderUri+"/"+orderUpdate.Token, "Basic", s.AuthBase64, orderUpdate)
+	updateJson, err := json.Marshal(orderUpdate)
+	if err != nil {
+		return nil, err
+	}
+	response, err := helper.Put(orderUri+"/"+orderUpdate.Token, "Basic", s.AuthBase64, bytes.NewBuffer(updateJson))
 	if err != nil {
 		return nil, err
 	}