fix(package): update replace-in-file to version 4.2.0

Closes #210

Author: greenkeeper[bot]

package.json

@@ -77,7 +77,7 @@
     "pify": "4.0.1",
     "postcss-loader": "3.0.0",
     "raw-loader": "1.0.0",
-    "replace-in-file": "3.4.2",
+    "replace-in-file": "4.2.0",
     "script-ext-html-webpack-plugin": "2.1.4",
     "update-notifier": "2.5.0",
     "validate-npm-package-name": "3.0.0",