Update tutorials for depreciated startup event

[LeviathanWakes]

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Example Code

@asynccontextmanager
async def lifespan(app: FastAPI):
    create_db_and_tables()
    yield

app = FastAPI(lifespan=lifespan)

Description

Req to update Simple Hero API with FastAPI tutorial with usage of lifespan function over depreciated startup event.

Currently the tutorial / tutorial001.py use depreciated startup event.

Would like to update to reflect usage of lifespan function as exampled above.

Operating System

macOS

Operating System Details

No response

SQLModel Version

0.0.22

Python Version

3.13.1

Additional Context

No response

[YuriiMotov]

You shouldn't call blocking non-async functions inside async function.