Update Rust crate async-nats to 0.43.0

Author: renovate[bot]

Cargo.toml

@@ -13,7 +13,7 @@ tonic = "0.14.1"
 tucana = { version = "0.0.33", features = ["all"] }
 code0-flow = { version = "0.0.16" }
 serde_json = "1.0.140"
-async-nats = "0.42.0"
+async-nats = "0.43.0"
 tonic-health = "0.14.1"
 tokio-stream = "0.1.17"
 uuid = { version = "1.18.0", features = ["v4"] }