chore(deps): bump clap_mangen from 0.2.18 to 0.2.20

Bumps [clap_mangen](https://github.com/clap-rs/clap) from 0.2.18 to 0.2.20.
- [Release notes](https://github.com/clap-rs/clap/releases)
- [Changelog](https://github.com/clap-rs/clap/blob/master/CHANGELOG.md)
- [Commits](clap-rs/clap@clap_mangen-v0.2.18...clap_mangen-v0.2.20)

---
updated-dependencies:
- dependency-name: clap_mangen
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

Cargo.lock

@@ -65,7 +65,7 @@ anyhow = "1.0.79"
 clap = { version = "4.4.18", features = ["derive"] }
 clap-verbosity-flag = "2.1.2"
 clap_complete = "4.4.9"
-clap_mangen = "0.2.18"
+clap_mangen = "0.2.20"
 derivative = "2.2.0"
 strum = { version = "0.26.1", features = ["derive"] }