chore(package): update eslint-config-airbnb-typescript to version 8.0.0

Closes #33

Author: greenkeeper[bot]

package.json

@@ -58,7 +58,7 @@
     "aws-sdk-mock": "^4.5.0",
     "chai": "^4.2.0",
     "eslint": "^5.0.0",
-    "eslint-config-airbnb-typescript": "^4.0.1",
+    "eslint-config-airbnb-typescript": "^8.0.0",
     "eslint-plugin-import": "^2.18.2",
     "eslint-plugin-jsx-a11y": "^6.2.3",
     "eslint-plugin-react": "^7.14.3",