fix(deps): update rust crate axum to v0.7.9 (#430)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [axum](https://redirect.github.com/tokio-rs/axum) | dependencies |
patch | `0.7.7` -> `0.7.9` |

---

### Release Notes

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

###
[`v0.7.9`](https://redirect.github.com/tokio-rs/axum/releases/tag/axum-v0.7.9):
axum - v0.7.9

[Compare
Source](https://redirect.github.com/tokio-rs/axum/compare/axum-v0.7.8...axum-v0.7.9)

- **fixed:** Avoid setting content-length before middleware
([#&#8203;3031])

[#&#8203;3031]: https://redirect.github.com/tokio-rs/axum/pull/3031

###
[`v0.7.8`](https://redirect.github.com/tokio-rs/axum/releases/tag/axum-v0.7.8):
axum - v0.7.8

[Compare
Source](https://redirect.github.com/tokio-rs/axum/compare/axum-v0.7.7...axum-v0.7.8)

- **fixed:** Skip SSE incompatible chars of `serde_json::RawValue` in
`Event::json_data` ([#&#8203;2992])
- **added:** Add `method_not_allowed_fallback` to set a fallback when a
path matches but there is no handler for the given HTTP method
([#&#8203;2903])
-   **added:** Add `MethodFilter::CONNECT`, `routing::connect[_service]`
    and `MethodRouter::connect[_service]` ([#&#8203;2961])
- **added:** Add `NoContent` as a self-described shortcut for
`StatusCode::NO_CONTENT` ([#&#8203;2978])

[#&#8203;2903]: https://redirect.github.com/tokio-rs/axum/pull/2903

[#&#8203;2961]: https://redirect.github.com/tokio-rs/axum/pull/2961

[#&#8203;2978]: https://redirect.github.com/tokio-rs/axum/pull/2978

[#&#8203;2992]: https://redirect.github.com/tokio-rs/axum/pull/2992

</details>

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