fix(deps): update dependency eslint-plugin-node to v8 (#57)

Author: renovate[bot]

package-lock.json

@@ -42,7 +42,7 @@
     "eslint-plugin-flowtype": "^3.2.0",
     "eslint-plugin-import": "^2.14.0",
     "eslint-plugin-jsx-a11y": "6.1.2",
-    "eslint-plugin-node": "^7.0.1",
+    "eslint-plugin-node": "^8.0.0",
     "eslint-plugin-prettier": "^3.0.0",
     "eslint-plugin-react": "^7.11.1"
   }