Bump moment from 2.24.0 to 2.29.2

Bumps [moment](https://github.com/moment/moment) from 2.24.0 to 2.29.2.
- [Release notes](https://github.com/moment/moment/releases)
- [Changelog](https://github.com/moment/moment/blob/develop/CHANGELOG.md)
- [Commits](moment/moment@2.24.0...2.29.2)

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

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

Author: dependabot[bot]

package-lock.json

@@ -32,7 +32,7 @@
   },
   "optionalDependencies": {
     "d3": "^4.9.1",
-    "moment": "^2.22.2"
+    "moment": "^2.29.2"
   },
   "scripts": {
     "start": "concurrently --kill-others \"webpack --watch --display-error-details\" \"node app.js\" &",