cargo: bump clap_mangen from 0.1.7 to 0.1.9

Bumps [clap_mangen](https://github.com/clap-rs/clap) from 0.1.7 to 0.1.9.
- [Release notes](https://github.com/clap-rs/clap/releases)
- [Changelog](https://github.com/clap-rs/clap/blob/master/CHANGELOG.md)
- [Commits](https://github.com/clap-rs/clap/compare/clap_mangen-v0.1.7...clap_mangen-v0.1.9)

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

Signed-off-by: dependabot[bot] <support@github.com>

Cargo.lock

@@ -272,9 +272,9 @@ dependencies = [
 
 [[package]]
 name = "clap_mangen"
-version = "0.1.7"
+version = "0.1.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "121b598d1b9d63d4ff3b7dae8defd88cc23e41850ee89fd2feec2e7d992e6ec8"
+checksum = "e16658e2f46d5269f95e4ec0f16594524cfc1e51637af40b2e5118c7c71a9fe1"
 dependencies = [
  "clap 3.2.5",
  "roff",