Bump momentjs-rails from 2.17.1 to 2.20.1
Bump momentjs-rails from 2.17.1 to 2.20.1

Bumps [momentjs-rails](https://github.com/derekprior/momentjs-rails) from 2.17.1 to 2.20.1.
- [Release notes](https://github.com/derekprior/momentjs-rails/releases)
- [Changelog](https://github.com/derekprior/momentjs-rails/blob/master/news.md)
- [Commits](https://github.com/derekprior/momentjs-rails/compare/v2.17.1...v2.20.1)

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
fsek/web,fsek/web,fsek/web