chore(package): update lint-staged to version 9.4.0

Closes #94

Author: greenkeeper[bot]

package.json

@@ -38,7 +38,7 @@
   "devDependencies": {
     "husky": "^1.2.0",
     "jest": "^23.6.0",
-    "lint-staged": "^8.1.0",
+    "lint-staged": "^9.4.0",
     "remove-lockfiles": "^2.0.4",
     "xo": "^0.23.0",
     "yeoman-assert": "^3.1.0",