Bump @rjsf/core from 5.18.4 to 5.20.0

Bumps [@rjsf/core](https://github.com/rjsf-team/react-jsonschema-form) from 5.18.4 to 5.20.0.
- [Release notes](https://github.com/rjsf-team/react-jsonschema-form/releases)
- [Changelog](https://github.com/rjsf-team/react-jsonschema-form/blob/main/CHANGELOG.md)
- [Commits](rjsf-team/react-jsonschema-form@5.18.4...5.20.0)

---
updated-dependencies:
- dependency-name: "@rjsf/core"
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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