* ⬆ Bump black from 22.8.0 to 22.10.0. PR [#5569](https://github.com/tiangolo/fastapi/pull/5569) by [@dependabot[bot]](https://github.com/apps/dependabot).

## 0.87.0

Highlights of this release:

* [Upgraded Starlette](https://github.com/encode/starlette/releases/tag/0.21.0)
    * Now the `TestClient` is based on HTTPX instead of Requests. 🚀

The `async` dependency has to be `async` for the context variable to be preserved for the rest of the request, but creating and closing the database connection is potentially blocking, so it could degrade performance if it was there.

* It requires more code and is a bit more complex.
* The middleware has to be an `async` function.
    * If there is code in it that has to "wait" for the network, it could "block" your application there and degrade performance a bit.
    * Although it's probably not very problematic here with the way `SQLAlchemy` works.