chore(package): update eslint-plugin-promise to version 4.1.1

Closes #69

Author: greenkeeper[bot]

package.json

@@ -15,7 +15,7 @@
     "eslint-config-standard": "^11.0.0",
     "eslint-plugin-import": "^2.2.0",
     "eslint-plugin-node": "^4.2.2",
-    "eslint-plugin-promise": "^3.5.0",
+    "eslint-plugin-promise": "^4.1.1",
     "eslint-plugin-standard": "^3.0.1",
     "execa": "^0.10.0",
     "fixpack": "^2.3.1",