chore(deps): update rust crate tucana to 0.0.20

Author: renovate[bot]

Cargo.toml

@@ -3,7 +3,7 @@ members = ["draco_rest", "draco_base", "draco_validator"]
 
 [workspace.dependencies]
 code0-flow = { version = "0.0.7", features = ["all"] }
-tucana = { version = "0.0.19", features = ["all"] }
+tucana = { version = "0.0.20", features = ["all"] }
 serde_json = { version = "1.0.138" }
 serde = "1.0.219"
 log = "0.4.27"