Update derivative requirement from 1.0.3 to 2.0.2

Updates the requirements on [derivative](https://github.com/mcarton/rust-derivative) to permit the latest version.
- [Release notes](https://github.com/mcarton/rust-derivative/releases)
- [Changelog](https://github.com/mcarton/rust-derivative/blob/master/CHANGELOG.md)
- [Commits](https://github.com/mcarton/rust-derivative/commits)

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

Cargo.toml

@@ -18,7 +18,7 @@ clap = { version="2.33", default-features = false, features=["wrap_help", "night
 clockpro-cache = "0.1.8"
 coarsetime = "0.1.12"
 daemonize-simple = "0.1.4"
-derivative = "1.0.3"
+derivative = "2.0.2"
 dnsstamps = "0.1.3"
 env_logger = { version = "0.7.1", default-features = false, features = ["humantime"] }
 futures = { version = "0.3", features = ["async-await"] }