Bump node-notifier to fix a memory leak issue (fixes #5365) (#5366)

Author: alexilyaev

packages/jest-cli/package.json

@@ -29,7 +29,7 @@
     "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",