fix(landingpage): override @isaacs/brace-expansion to fix high severity vulnerability

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: GenerQAQ

landingpage/package.json

@@ -85,7 +85,10 @@
       "sharp",
       "unrs-resolver",
       "workerd"
-    ]
+    ],
+    "overrides": {
+      "@isaacs/brace-expansion": ">=5.0.1"
+    }
   },
   "cloudflare": {
     "bindings": {