Update dependency eslint-plugin-import to v2.18.1

Author: renovate-bot

package-lock.json

@@ -12,7 +12,7 @@
   ],
   "devDependencies": {
     "eslint": "6.0.1",
-    "eslint-plugin-import": "2.18.0",
+    "eslint-plugin-import": "2.18.1",
     "nwb": "0.23.0",
     "prettier": "1.18.2"
   },