Update dependency eslint-plugin-import to v2.12.0 (#341)

Author: renovate[bot]

package-lock.json

@@ -42,7 +42,7 @@
     "del": "3.0.0",
     "eslint": "4.19.1",
     "eslint-config-airbnb": "16.1.0",
-    "eslint-plugin-import": "2.8.0",
+    "eslint-plugin-import": "2.12.0",
     "geckodriver": "1.11.0",
     "istanbul": "0.4.5",
     "mkdirp": "0.5.1",