fix(deps): update rust crate axum-extra to v0.9.4 (#71)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [axum-extra](https://redirect.github.com/tokio-rs/axum) | dependencies
| patch | `0.9.3` -> `0.9.4` |

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### Release Notes

<details>
<summary>tokio-rs/axum (axum-extra)</summary>

###
[`v0.9.4`](https://redirect.github.com/tokio-rs/axum/releases/tag/axum-extra-v0.9.4):
axum-extra - v0.9.4

[Compare
Source](https://redirect.github.com/tokio-rs/axum/compare/axum-extra-v0.9.3...axum-extra-v0.9.4)

-   **added:** The `response::Attachment` type ([#&#8203;2789])

[#&#8203;2789]: https://redirect.github.com/tokio-rs/axum/pull/2789

</details>

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