cargo: bump clap_mangen from 0.1.2 to 0.1.3

Bumps [clap_mangen](https://github.com/clap-rs/clap) from 0.1.2 to 0.1.3.
- [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-v0.1.2...clap_mangen-v0.1.3)

---
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

@@ -257,9 +257,9 @@ dependencies = [
 
 [[package]]
 name = "clap_mangen"
-version = "0.1.2"
+version = "0.1.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0649fb4156bbd7306896025005596033879a2051f9a3aa7416ab915df1f8fdac"
+checksum = "900e313b78fbb118c46d130c1a979a1f4eab0d9a8f7f139975ff0c38063f431f"
 dependencies = [
  "clap 3.1.8",
  "roff",