Merge pull request #438 from PetrDlouhy/fix_ruff_error

fix ruff error

Author: PetrDlouhy

.readthedocs.yaml

@@ -1,5 +1,8 @@
 version: 2
 
+sphinx:
+  configuration: docs/conf.py
+
 build:
   os: "ubuntu-20.04"
   tools:

payments/models.py

@@ -1,8 +1,12 @@
 from __future__ import annotations
 
+from typing import TYPE_CHECKING
+
+if TYPE_CHECKING:
+    from collections.abc import Iterable
+
 import json
 import logging
-from collections.abc import Iterable
 from uuid import uuid4
 
 from django.db import models