Upgrade packages

package.json

@@ -15,14 +15,14 @@
  },
  "homepage": "https://github.com/ember-learn/algolia-index-update-scripts#readme",
  "dependencies": {
- "algoliasearch": "^3.24.5",
- "bluebird": "^3.5.1",
- "chalk": "^2.2.0",
- "commander": "^2.17.1",
- "dotenv": "^4.0.0",
+ "algoliasearch": "^3.30.0",
+ "bluebird": "^3.5.2",
+ "chalk": "^2.4.1",
+ "commander": "^2.19.0",
+ "dotenv": "^6.1.0",
  "esm": "^3.0.84",
  "file-system": "^2.2.2",
- "request": "^2.83.0",
+ "request": "^2.88.0",
  "request-promise": "^4.2.2"
  }
 }