Revert "Downgrade validator crate to 0.15.0"

This reverts commit b08cd5e.

Author: sd109

Cargo.lock

@@ -70,7 +70,7 @@ tracing-opentelemetry = "0.21"
 tracing-subscriber = { version = "0.3", features = ["env-filter"] }
 url = { version = "2", features = ["serde"] }
 uuid = { version = "1.12.1", features = ["v4"] }
-validator = { version = "0.15", features = ["derive"] }
+validator = { version = "0.16", features = ["derive"] }
 zerocopy = { version = "0.6.1", features = ["alloc", "simd"] }
 zune-inflate = "0.2.54"