Update dependency lint-staged to v9.4.2 (#204)

Author: renovate-bot

package.json

@@ -46,7 +46,7 @@
     "ava": "2.4.0",
     "builtins": "2.0.1",
     "husky": "3.0.7",
-    "lint-staged": "9.2.0",
+    "lint-staged": "9.4.2",
     "np": "5.0.3",
     "prettier": "1.18.2",
     "rimraf": "3.0.0",