Bump jsonschema from 4.19.1 to 4.21.1

Bumps [jsonschema](https://github.com/python-jsonschema/jsonschema) from 4.19.1 to 4.21.1.
- [Release notes](https://github.com/python-jsonschema/jsonschema/releases)
- [Changelog](https://github.com/python-jsonschema/jsonschema/blob/main/CHANGELOG.rst)
- [Commits](python-jsonschema/jsonschema@v4.19.1...v4.21.1)

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

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Author: dependabot[bot]