Bump simplejson from 3.17.0 to 3.17.2
Bump simplejson from 3.17.0 to 3.17.2

Bumps [simplejson](https://github.com/simplejson/simplejson) from 3.17.0 to 3.17.2.
- [Release notes](https://github.com/simplejson/simplejson/releases)
- [Changelog](https://github.com/simplejson/simplejson/blob/master/CHANGES.txt)
- [Commits](https://github.com/simplejson/simplejson/compare/v3.17.0...v3.17.2)

Signed-off-by: dependabot-preview[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
Kinto/kinto-attachment