lint-staged updated for security issue

Author: MadanBhandari

package.json

@@ -45,7 +45,7 @@
     "@types/node": "^8.0.46",
     "cross-env": "^5.1.0",
     "husky": "^0.14.3",
-    "lint-staged": "^4.3.0",
+    "lint-staged": "^8.1.0",
     "mocha": "^4.0.1",
     "prettier": "^1.7.4",
     "ts-node": "^3.3.0",