Bump clap_mangen from 0.2.11 to 0.2.12

Bumps [clap_mangen](https://github.com/clap-rs/clap) from 0.2.11 to 0.2.12.
- [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-v0.2.11...clap_mangen-v0.2.12)

---
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

@@ -125,9 +125,9 @@ checksum = "2da6da31387c7e4ef160ffab6d5e7f00c42626fe39aea70a7b0f1773f7dd6c1b"
 
 [[package]]
 name = "clap_mangen"
-version = "0.2.11"
+version = "0.2.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6bcbd911d903a985de775aabe3bcef9b88e2a7d943e36aa8691617012d2b7731"
+checksum = "8f2e32b579dae093c2424a8b7e2bea09c89da01e1ce5065eb2f0a6f1cc15cc1f"
 dependencies = [
  "clap",
  "roff",