Upgrade: Bump moment-timezone from 0.5.32 to 0.5.40 in /ch7/front

Bumps [moment-timezone](https://github.com/moment/moment-timezone) from 0.5.32 to 0.5.40.
- [Release notes](https://github.com/moment/moment-timezone/releases)
- [Changelog](https://github.com/moment/moment-timezone/blob/develop/changelog.md)
- [Commits](moment/moment-timezone@0.5.32...0.5.40)

---
updated-dependencies:
- dependency-name: moment-timezone
  dependency-type: indirect
...

Signed-off-by: dependabot[bot] <[email protected]>