Bump dataclasses-json from 0.6.4 to 0.6.6

Bumps [dataclasses-json](https://github.com/lidatong/dataclasses-json) from 0.6.4 to 0.6.6.
- [Release notes](https://github.com/lidatong/dataclasses-json/releases)
- [Commits](lidatong/dataclasses-json@v0.6.4...v0.6.6)

---
updated-dependencies:
- dependency-name: dataclasses-json
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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