Bump fastjsonschema from 2.20.0 to 2.21.1

Bumps [fastjsonschema](https://github.com/horejsek/python-fastjsonschema) from 2.20.0 to 2.21.1.
- [Changelog](https://github.com/horejsek/python-fastjsonschema/blob/master/CHANGELOG.txt)
- [Commits](horejsek/python-fastjsonschema@v2.20.0...v2.21.1)

---
updated-dependencies:
- dependency-name: fastjsonschema
  dependency-type: indirect
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]