fix(package): update webpack-bundle-analyzer to version 3.6.1

Closes #234

Author: greenkeeper[bot]

package.json

@@ -77,7 +77,7 @@
     "style-loader": "^0.21.0",
     "url-loader": "^1.0.0",
     "webpack": "^4.0.0",
-    "webpack-bundle-analyzer": "^2.9.2",
+    "webpack-bundle-analyzer": "^3.6.1",
     "webpack-cli": "^3.0.0",
     "webpack-visualizer-plugin": "^0.1.11"
   },