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

Closes #19

Author: greenkeeper[bot]

package.json

@@ -68,7 +68,7 @@
     "commitizen": "^3.0.2",
     "husky": "^1.1.1",
     "jest": "^23",
-    "lint-staged": "^8.0.0",
+    "lint-staged": "^9.4.0",
     "lodash.find": "^4.6.0",
     "prettier": "^1",
     "rimraf": "^2",