Bump moment from 2.22.2 to 2.29.4 in /vue

Bumps [moment](https://github.com/moment/moment) from 2.22.2 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@2.22.2...2.29.4)

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

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

vue/package.json

@@ -15,7 +15,7 @@
   },
   "dependencies": {
     "lodash": "^4.17.10",
-    "moment": "^2.22.2",
+    "moment": "^2.29.4",
     "moment-timezone": "^0.5.21",
     "npm": "^6.1.0",
     "showdown": "^1.9.1",