Bump clap from 4.3.19 to 4.3.21

Bumps [clap](https://github.com/clap-rs/clap) from 4.3.19 to 4.3.21.
- [Release notes](https://github.com/clap-rs/clap/releases)
- [Changelog](https://github.com/clap-rs/clap/blob/master/CHANGELOG.md)
- [Commits](clap-rs/clap@v4.3.19...v4.3.21)

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

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

Cargo.lock

@@ -12,7 +12,7 @@ edition = "2021"
 [dependencies]
 anyhow = "1.0.72"
 bitcoin = "0.30.1"
-clap = { version = "4.3.19", features = [ "cargo" ] }
+clap = { version = "4.3.21", features = [ "cargo" ] }
 dirs = "5.0.1"
 hex = "0.4.3"
 rusty-leveldb = "2.0.0"