chore(package): update eslint-plugin-promise to version 4.0.1

Closes #20

Author: greenkeeper[bot]

package.json

@@ -38,7 +38,7 @@
     "eslint-plugin-lodash": "^2.4.3",
     "eslint-plugin-node": "^5.1.0",
     "eslint-plugin-prettier": "^2.1.2",
-    "eslint-plugin-promise": "^3.5.0",
+    "eslint-plugin-promise": "^4.0.1",
     "eslint-plugin-react": "^7.1.0",
     "eslint-plugin-unicorn": "^3.0.0",
     "express": "^4.16.2",