fix(deps): resolve the open Dependabot alerts (#94)

Co-authored-by: Claude Fable 5 <noreply@anthropic.com>

packages/landing/package.json

@@ -17,7 +17,7 @@
     "react": "^19.1.0",
     "react-dom": "^19.1.0",
     "react-markdown": "^10.1.0",
-    "react-router": "^7.6.0",
+    "react-router": "^8.3.0",
     "rehype-raw": "^7.0.0",
     "remark-gfm": "^4.0.0"
   },
@@ -31,6 +31,6 @@
     "tailwindcss": "^4.1.0",
     "typescript": "^5.6.0",
     "vite": "^7.0.0",
-    "vitest": "^2.1.0"
+    "vitest": "^3.2.6"
   }
 }