chore(deps): Update clap requirement from =4.5.20 to =4.5.21

Updates the requirements on [clap](https://github.com/clap-rs/clap) to permit the latest version.
- [Release notes](https://github.com/clap-rs/clap/releases)
- [Changelog](https://github.com/clap-rs/clap/blob/master/CHANGELOG.md)
- [Commits](clap-rs/clap@clap_complete-v4.5.20...clap_complete-v4.5.21)

---
updated-dependencies:
- dependency-name: clap
  dependency-type: direct:production
...

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

Author: dependabot[bot]

dadk-user/Cargo.toml

@@ -6,7 +6,7 @@ edition = "2021"
 [dependencies]
 anyhow = { version = "1.0.90", features = ["std", "backtrace"] }
 chrono = { version = "=0.4.35", features = ["serde"] }
-clap = { version = "=4.5.20", features = ["derive"] }
+clap = { version = "=4.5.21", features = ["derive"] }
 dadk-config = { path = "../dadk-config" }
 derive_builder = "0.20.0"
 lazy_static = "1.4.0"