fix(package): update babel-loader to version 8.0.6

Closes #21

Author: greenkeeper[bot]

package.json

@@ -14,7 +14,7 @@
     "@rispa/babel": "4.2.x",
     "@webpack-blocks/webpack2": "^0.4.0",
     "babel-core": "^6.26.0",
-    "babel-loader": "7.1.1",
+    "babel-loader": "8.0.6",
     "babel-preset-env": "^1.6.1",
     "babel-polyfill": "^6.26.0",
     "happypack": "^4.0.1",