Bump ujson from 5.2.0 to 5.3.0 (#513)
Bump ujson from 5.2.0 to 5.3.0 (#513)

Bumps [ujson](https://github.com/ultrajson/ultrajson) from 5.2.0 to 5.3.0.
- [Release notes](https://github.com/ultrajson/ultrajson/releases)
- [Commits](https://github.com/ultrajson/ultrajson/compare/5.2.0...5.3.0)

---
updated-dependencies:
- dependency-name: ujson
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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Co-authored-by: dependabot[bot] <1c358da00a777d4e9898c1280ab801e2df165188@users.noreply.github.com>
Kinto/kinto-attachment