Update Rust crate chrono to 0.4.42

Author: oxide-renovate[bot]

Cargo.lock

@@ -23,6 +23,6 @@ slog-async = { version = "2.8" }
 slog-term = { version = "2.9" }
 tokio = { version = "1.46", features = [ "full" ] }
 uuid = { version = "1.18.0", features = ["serde", "v4"] }
-chrono = "0.4.41"
+chrono = "0.4.42"
 reqwest = { version = "0.12.23", features = ["blocking", "json"] }
 unicase = { version = "2.8.1" }