Add missing import for OrderedDict in query.py

Author: Photonios

psqlextra/query.py

@@ -1,5 +1,6 @@
-from typing import List, Tuple, Optional, Dict, Any
 from enum import Enum
+from typing import List, Tuple, Optional, Dict, Any
+from collections import OrderedDict
 
 from django.db import models
 from django.db.models import sql