chore(package): update lint-staged to version 9.4.1

Closes #49

Author: greenkeeper[bot]

package.json

@@ -38,7 +38,7 @@
     "g-status": "^2.0.0",
     "husky": "^1.3.1",
     "jest": "^23.6.0",
-    "lint-staged": "^8.1.0",
+    "lint-staged": "^9.4.1",
     "pify": "^4.0.1",
     "remove-lockfiles": "^2.1.1",
     "xo": "^0.24.0"