Bump shortid from 2.2.14 to 2.2.15 (#5504)
Bump shortid from 2.2.14 to 2.2.15 (#5504)

Bumps [shortid](https://github.com/dylang/shortid) from 2.2.14 to 2.2.15.
- [Release notes](https://github.com/dylang/shortid/releases)
- [Changelog](https://github.com/dylang/shortid/blob/master/CHANGELOG.md)
- [Commits](https://github.com/dylang/shortid/compare/2.2.14...2.2.15)

Signed-off-by: dependabot-preview[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
zooniverse/Panoptes-Front-End