Auto merge of #2006 - rust-lang:dependabot/npm_and_yarn/loader.js-4.7.0, r=smarnach

Bump loader.js from 4.5.1 to 4.7.0

Bumps [loader.js](https://github.com/ember-cli/loader.js) from 4.5.1 to 4.7.0.
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Author: bors

package-lock.json

@@ -79,7 +79,7 @@
     "eslint-plugin-ember": "^7.7.2",
     "eslint-plugin-prettier": "^3.1.2",
     "faker": "^4.1.0",
-    "loader.js": "^4.5.1",
+    "loader.js": "^4.7.0",
     "normalize.css": "^7.0.0",
     "nyc": "^14.1.1",
     "prettier": "^1.13.4",