Bump ujson from 1.35 to 2.0.1
Bump ujson from 1.35 to 2.0.1

Bumps [ujson](https://github.com/ultrajson/ultrajson) from 1.35 to 2.0.1.
- [Release notes](https://github.com/ultrajson/ultrajson/releases)
- [Commits](https://github.com/ultrajson/ultrajson/compare/v1.35...2.0.1)

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