clash-verge-rev: mark as insecure

At the request of package maintainer @Bot-wxt1221.

Package affected by an yet-undisclosed but credible LPE vulnerability,
marking as insecure.

See https://github.com/clash-verge-rev/clash-verge-rev/issues/3428

pkgs/by-name/cl/clash-verge-rev/package.nix

@@ -80,6 +80,9 @@ let
       bot-wxt1221
     ];
     platforms = lib.platforms.linux;
+    knownVulnerabilities = [
+      "https://github.com/clash-verge-rev/clash-verge-rev/issues/3428"
+    ];
   };
 in
 stdenv.mkDerivation {