Bump clap_mangen from 0.2.14 to 0.2.15

Bumps [clap_mangen](https://github.com/clap-rs/clap) from 0.2.14 to 0.2.15.
- [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-v0.2.14...clap_mangen-v0.2.15)

---
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

@@ -128,9 +128,9 @@ checksum = "702fc72eb24e5a1e48ce58027a675bc24edd52096d5397d4aea7c6dd9eca0bd1"
 
 [[package]]
 name = "clap_mangen"
-version = "0.2.14"
+version = "0.2.15"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b44f35c514163027542f7147797ff930523eea288e03642727348ef1a9666f6b"
+checksum = "d3be86020147691e1d2ef58f75346a3d4d94807bfc473e377d52f09f0f7d77f7"
 dependencies = [
  "clap",
  "roff",