chore(deps): bump tokio-tungstenite to 0.30

No code changes required. The rustls-tls-native-roots feature and the
Message/WebSocketStream APIs used by the tunnel WebSocket bridge are
unchanged in 0.30.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

Author: platinummonkey

Cargo.lock

@@ -123,7 +123,7 @@ aes-gcm = { version = "0.11", optional = true }
 # ---- Native-only dependencies ----
 
 # Synthetics tunnel
-tokio-tungstenite = { version = "0.29", features = ["rustls-tls-native-roots"], optional = true }
+tokio-tungstenite = { version = "0.30", features = ["rustls-tls-native-roots"], optional = true }
 yamux = { version = "0.14", optional = true }
 russh = { version = "0.61", optional = true }
 ssh-key = { version = "0.6", features = ["p256", "std"], optional = true }