change first_name and last_name to full_name on cash_transaction list

core/apps/finance/serializers/cash_transaction.py

@@ -21,7 +21,7 @@ class CashTransactionEmployeeListSerializer(serializers.ModelSerializer):
     class Meta:
         model = User 
         fields = [
-            'id', 'profile_image', 'first_name', 'last_name', 'username'
+            'id', 'profile_image', 'full_name', 'username'
         ]