Bump moment from 2.29.1 to 2.29.4 in /waltz-ng

Bumps [moment](https://github.com/moment/moment) from 2.29.1 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@2.29.1...2.29.4)

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

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

Author: dependabot[bot]

waltz-ng/package-lock.json

@@ -56,7 +56,7 @@
     "html2canvas": "^1.4.1",
     "json-stable-stringify": "1.0.1",
     "lodash": "4.17.21",
-    "moment": "2.29.1",
+    "moment": "2.29.4",
     "ng-showdown": "1.1.0",
     "ng-tags-input": "3.2.0",
     "patch-package": "6.4.7",