Fix - Does not work with from __future__ import annotations

tests/test_oas/test_cmd/sample.py

@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 from aiohttp import web
 
 from aiohttp_pydantic import PydanticView

tests/test_oas/test_cmd/test_cmd.py

@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 import argparse
 from textwrap import dedent
 from io import StringIO