Merge pull request #1460 from mozilla/greenkeeper/babel-loader-6.2.9

Update babel-loader to the latest version 🚀

package.json

@@ -196,7 +196,7 @@
     "babel-core": "6.20.0",
     "babel-eslint": "7.1.0",
     "babel-gettext-extractor": "git+https://github.com/muffinresearch/babel-gettext-extractor.git#ecd85dea4553247a3cb579da817df29f381df5b9",
-    "babel-loader": "6.2.7",
+    "babel-loader": "6.2.9",
     "babel-plugin-istanbul": "3.0.0",
     "babel-plugin-react-transform": "2.0.2",
     "babel-plugin-transform-class-properties": "6.18.0",