Bump moment from 2.24.0 to 2.29.4

Bumps [moment](https://github.com/moment/moment) from 2.24.0 to 2.29.4.
- [Release notes](https://github.com/moment/moment/releases)
- [Changelog](https://github.com/moment/moment/blob/develop/CHANGELOG.md)
- [Commits](moment/moment@2.24.0...2.29.4)

---
updated-dependencies:
- dependency-name: moment
  dependency-type: direct:development
...

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

package.json

@@ -31,7 +31,7 @@
     "browserify": "16.1.0",
     "chai": "4.1.2",
     "mocha": "3.5.3",
-    "moment": "2.24.0",
+    "moment": "2.29.4",
     "uglify-es": "3.3.10",
     "better-npm-audit": "3.7.3"
   },