Update dependency husky to v2.4.0

Author: renovate-bot

package-lock.json

@@ -45,7 +45,7 @@
     "eslint": "5.16.0",
     "eslint-config-prettier": "4.3.0",
     "eslint-plugin-prettier": "3.1.0",
-    "husky": "2.3.0",
+    "husky": "2.4.0",
     "jest": "24.8.0",
     "lint-staged": "8.1.7",
     "prettier": "1.17.1",