Update validator to 0.20.0 (#3345)

Author: yanns

Cargo.lock

@@ -11,7 +11,7 @@ thiserror = "1.0.29"
 tokio = { version = "1.0", features = ["full"] }
 tracing = "0.1"
 tracing-subscriber = { version = "0.3", features = ["env-filter"] }
-validator = { version = "0.18.1", features = ["derive"] }
+validator = { version = "0.20.0", features = ["derive"] }
 
 [dev-dependencies]
 http-body-util = "0.1.0"