Bump simplejson from 3.19.2 to 3.20.2

Bumps [simplejson](https://github.com/simplejson/simplejson) from 3.19.2 to 3.20.2.
- [Release notes](https://github.com/simplejson/simplejson/releases)
- [Changelog](https://github.com/simplejson/simplejson/blob/master/CHANGES.txt)
- [Commits](simplejson/simplejson@v3.19.2...v3.20.2)

---
updated-dependencies:
- dependency-name: simplejson
  dependency-version: 3.20.2
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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Author: dependabot[bot]