FIX: bump transitive ws to 8.21.0 to address GHSA-58qx-3vcg-4xpx (#1873)

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: romanlutz

frontend/package.json

@@ -63,6 +63,7 @@
     "rollup": "4.59.0",
     "@tootallnate/once": "3.0.1",
     "follow-redirects": "1.16.0",
-    "postcss": "8.5.13"
+    "postcss": "8.5.13",
+    "ws": "8.21.0"
   }
 }