fix(deps): update dependency babel-eslint to v9 (#30)

Author: renovate[bot]

package-lock.json

@@ -36,7 +36,7 @@
     "eslint": "^5.0.0"
   },
   "dependencies": {
-    "babel-eslint": "^8.2.6",
+    "babel-eslint": "^9.0.0",
     "eslint-config-prettier": "^3.0.1",
     "eslint-plugin-flowtype": "^2.50.0",
     "eslint-plugin-import": "^2.14.0",