Bump eslint-loader to 1.6.3

Author: viankakrisna

packages/react-scripts/package.json

@@ -39,7 +39,7 @@
     "dotenv": "2.0.0",
     "eslint": "3.8.1",
     "eslint-config-react-app": "^0.5.1",
-    "eslint-loader": "1.6.1",
+    "eslint-loader": "1.6.3",
     "eslint-plugin-flowtype": "2.21.0",
     "eslint-plugin-import": "2.0.1",
     "eslint-plugin-jsx-a11y": "2.2.3",