style: apply ruff formatting and move TYPE_CHECKING imports in tests

tests/conftest.py

@@ -3,7 +3,7 @@
 from __future__ import annotations
 
 import asyncio
-from typing import TYPE_CHECKING, AsyncGenerator, Generator
+from typing import TYPE_CHECKING
 
 import pytest
 from fastapi import FastAPI, Request
@@ -13,8 +13,8 @@ from httpx import ASGITransport, AsyncClient
 from fastapi_traffic import (
     Algorithm,
     MemoryBackend,
-    RateLimitExceeded,
     RateLimiter,
+    RateLimitExceeded,
     SQLiteBackend,
     rate_limit,
 )
@@ -23,6 +23,7 @@ from fastapi_traffic.core.limiter import set_limiter
 from fastapi_traffic.middleware import RateLimitMiddleware
 
 if TYPE_CHECKING:
+    from collections.abc import AsyncGenerator, Generator
     pass