build(deps): bump clap from 4.1.6 to 4.1.8

Bumps [clap](https://github.com/clap-rs/clap) from 4.1.6 to 4.1.8.
- [Release notes](https://github.com/clap-rs/clap/releases)
- [Changelog](https://github.com/clap-rs/clap/blob/master/CHANGELOG.md)
- [Commits](clap-rs/clap@v4.1.6...v4.1.8)

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

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

Cargo.toml

@@ -17,7 +17,7 @@ steward-server = { path = "crates/server", version = "0.2.0" }
 anyhow = { version = "^1.0.69", default-features = false }
 axum = { version = "^0.5.17", default-features = false }
 chrono = { version = "0.4", default-features = false }
-clap = { version = "^4.1.6", default-features = false }
+clap = { version = "^4.1.8", default-features = false }
 confargs = { version = "^0.1.3", default-features = false }
 const-oid = { version = "0.9.2", default-features = false }
 der = { version = "0.6", default-features = false }