Bump node-notifier from 5.2.1 to 8.0.1

Bumps [node-notifier](https://github.com/mikaelbr/node-notifier) from 5.2.1 to 8.0.1.
- [Release notes](https://github.com/mikaelbr/node-notifier/releases)
- [Changelog](https://github.com/mikaelbr/node-notifier/blob/v8.0.1/CHANGELOG.md)
- [Commits](mikaelbr/node-notifier@v5.2.1...v8.0.1)

---
updated-dependencies:
- dependency-name: node-notifier
  dependency-type: direct:development
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

package-lock.json

@@ -71,7 +71,7 @@
     "karma-webpack": "^2.0.2",
     "mocha": "^5.2.0",
     "nightwatch": "^1.0.18",
-    "node-notifier": "^5.1.2",
+    "node-notifier": "^8.0.1",
     "node-sass": "^4.11.0",
     "optimize-css-assets-webpack-plugin": "^3.2.0",
     "ora": "^1.2.0",