ci: fix poetry

examples/in_memory/main.py

@@ -42,14 +42,17 @@ async def get_date():
 async def get_datetime(request: Request, response: Response):
     return {"now": pendulum.now()}
 
+
 @cache(namespace="test")
 async def func_kwargs(*unused_args, **kwargs):
     return kwargs
 
+
 @app.get("/kwargs")
 async def get_kwargs(name: str):
     return await func_kwargs(name, name=name)
 
+
 @app.get("/sync-me")
 @cache(namespace="test")
 def sync_me():