Update Rust crate ipnetwork to v0.21.0 (#10323)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

Cargo.lock

@@ -88,7 +88,7 @@ http-body-util = "=0.1.2"
 hyper = { version = "=1.5.2", features = ["client", "http1"] }
 indexmap = { version = "=2.7.0", features = ["serde"] }
 indicatif = "=0.17.9"
-ipnetwork = "=0.20.0"
+ipnetwork = "=0.21.0"
 json-subscriber = "=0.2.4"
 krata-tokio-tar = "=0.4.2"
 lettre = { version = "=0.11.11", default-features = false, features = ["file-transport", "smtp-transport", "hostname", "builder", "tokio1", "tokio1-native-tls"] }