Update dependency webpack-hot-middleware to v2.25.1

package.json

@@ -157,7 +157,7 @@
     "url-loader": "4.1.1",
     "webpack-cli": "3.3.12",
     "webpack-dev-middleware": "3.7.2",
-    "webpack-hot-middleware": "2.25.0",
+    "webpack-hot-middleware": "2.25.1",
     "webpack-md5-hash": "0.0.6"
   }
 }