[deps]: Update Rust crate clap_mangen to v0.2.22 (#870)

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This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [clap_mangen](https://togithub.com/clap-rs/clap) | build-dependencies
| patch | `0.2.21` -> `0.2.22` |

---

### Release Notes

<details>
<summary>clap-rs/clap (clap_mangen)</summary>

###
[`v0.2.22`](https://togithub.com/clap-rs/clap/compare/clap_mangen-v0.2.21...clap_mangen-v0.2.22)

[Compare
Source](https://togithub.com/clap-rs/clap/compare/clap_mangen-v0.2.21...clap_mangen-v0.2.22)

</details>

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