chore(package): update lint-staged to version 9.0.0 (#285)

Author: greenkeeper[bot]

package.json

@@ -36,7 +36,7 @@
     "husky": "^2.1.0",
     "jest": "^24.7.1",
     "lerna": "3.14.1",
-    "lint-staged": "^8.1.5",
+    "lint-staged": "^9.0.0",
     "prettier": "1.17.0",
     "typescript": "~3.4.0"
   },