fix(package): update multistream to version 4.0.0

Author: greenkeeper[bot]

examples/SSR/parcel-react-ssr/package.json

@@ -25,7 +25,7 @@
     "cheerio": "^1.0.0-rc.2",
     "compression": "^1.7.2",
     "express": "^4.16.2",
-    "multistream": "^3.0.0",
+    "multistream": "^4.0.0",
     "parcel-plugin-bundle-manifest": "^0.2.0",
     "react": "^16.7.0",
     "react-dom": "^16.7.0",