clean up dependencies

examples/simple_command/Cargo.toml

@@ -4,7 +4,7 @@ name = "simple_command"
 edition = "2021"
 
 [dependencies]
+anyhow = { workspace = true }
 api = { path = "../../api" }
-tokio = { version = "1.43.0", features = ["rt-multi-thread", "signal"] }
-tokio-util = "0.7.13"
-anyhow = "1.0.100"
+tokio = { workspace = true, features = ["rt-multi-thread", "signal"] }
+tokio-util = { workspace = true }