Update eslint-config-airbnb-base requirement (#536)

Updates the requirements on [eslint-config-airbnb-base](https://github.com/airbnb/javascript) to permit the latest version.
- [Release notes](https://github.com/airbnb/javascript/releases)
- [Commits](https://github.com/airbnb/javascript/compare/eslint-config-airbnb-base-v13.1.0...eslint-config-airbnb-base-v14.0.0)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

{{cookiecutter.app_name}}/package.json

@@ -36,7 +36,7 @@
     "babel-preset-env": "^1.7.0",
     "concurrently": "^4.1.0",
     "css-loader": "^3.0.0",
-    "eslint-config-airbnb-base": "^13.1.0",
+    "eslint-config-airbnb-base": "^14.0.0",
     "eslint-plugin-import": "^2.17.3",
     "eslint": "^5.16.0",
     "file-loader": "^4.0.0",