message: Bump `node-notifier` to fix a memory leak issue (fixes
diff: "jest-util": "^22.1.4",
  "jest-worker": "^22.1.0",
  "micromatch": "^2.3.11",
  - "node-notifier": "^5.1.2",
  + "node-notifier": "^5.2.1",
  "realpath-native": "^1.0.0",
  "rimraf": "^2.5.4",
  "slash": "^1.0.0",
  