style(tests): cargo fmt for ws-upgrade-session ws-06 test

tests/ws_upgrade_session.rs

@@ -604,5 +604,8 @@ async fn inbound_message_over_cap_fails_the_connection() {
         .next_close(std::time::Duration::from_secs(5))
         .await
         .expect("server must fail the oversized-inbound connection (WS-06)");
-    assert!(close.is_some(), "expected a close or stream end, got {close:?}");
+    assert!(
+        close.is_some(),
+        "expected a close or stream end, got {close:?}"
+    );
 }