chore(package): update style-loader to version 1.2.1

Closes #41

Author: greenkeeper[bot]

package.json

@@ -69,7 +69,7 @@
     "react-dom": "^16.5.2",
     "rimraf": "^2.6.2",
     "sass-loader": "^7.1.0",
-    "style-loader": "^0.23.1",
+    "style-loader": "^1.2.1",
     "url-loader": "^1.1.2",
     "webpack": "^4.20.2",
     "webpack-cli": "^3.1.2",