fix(deps): update rust crate axum to v0.7.6 (#70)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [axum](https://redirect.github.com/tokio-rs/axum) | dependencies |
patch | `0.7.5` -> `0.7.6` |

---

### Release Notes

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

###
[`v0.7.6`](https://redirect.github.com/tokio-rs/axum/releases/tag/axum-extra-v0.7.6):
axum-extra - v0.7.6

[Compare
Source](https://redirect.github.com/tokio-rs/axum/compare/axum-v0.7.5...axum-v0.7.6)

-   **fixed:** Remove unused dependency ([#&#8203;2135])

[#&#8203;2135]: https://redirect.github.com/tokio-rs/axum/pull/2135

</details>

---

### Configuration

📅 **Schedule**: Branch creation - At any time (no schedule defined),
Automerge - At any time (no schedule defined).

🚦 **Automerge**: Disabled by config. Please merge this manually once you
are satisfied.

♻ **Rebasing**: Whenever PR becomes conflicted, or you tick the
rebase/retry checkbox.

🔕 **Ignore**: Close this PR and you won't be reminded about this update
again.

---

- [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check
this box

---

This PR was generated by [Mend Renovate](https://mend.io/renovate/).
View the [repository job
log](https://developer.mend.io/github/mist-id/mist).

<!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiIzOC44MC4wIiwidXBkYXRlZEluVmVyIjoiMzguODAuMCIsInRhcmdldEJyYW5jaCI6Im1haW4iLCJsYWJlbHMiOltdfQ==-->

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>