chore: bump jest to v24 (#216)

Author: thymikee

package.json

@@ -40,7 +40,7 @@
     "eslint-plugin-node": "^8.0.0",
     "eslint-plugin-prettier": "^3.0.0",
     "husky": "^1.0.1",
-    "jest": "^23.4.1",
+    "jest": "^24.0.0",
     "jest-runner-eslint": "^0.7.1",
     "lint-staged": "^8.0.4",
     "prettier": "^1.10.2",