style: apply ruff formatting to source and test files

tests/integration/conftest.py

@@ -1,6 +1,6 @@
 """Integration test fixtures."""
 
-from typing import AsyncGenerator
+from collections.abc import AsyncGenerator
 
 import pytest
 from sqlalchemy.ext.asyncio import (
@@ -39,7 +39,7 @@ def session_factory(engine: AsyncEngine) -> async_sessionmaker[AsyncSession]:
 
 
 @pytest.fixture(autouse=True)
-async def setup_db(engine: AsyncEngine) -> AsyncGenerator[None, None]:
+async def setup_db(engine: AsyncEngine) -> AsyncGenerator[None]:
     """Setup database tables for each test."""
     async with engine.begin() as conn:
         await conn.run_sync(Base.metadata.create_all)
@@ -51,7 +51,7 @@ async def setup_db(engine: AsyncEngine) -> AsyncGenerator[None, None]:
 @pytest.fixture
 async def db_session(
     session_factory: async_sessionmaker[AsyncSession],
-) -> AsyncGenerator[AsyncSession, None]:
+) -> AsyncGenerator[AsyncSession]:
     """Create database session for testing."""
     async with session_factory() as session:
         yield session