chore(deps): bump tar and @tensorflow/tfjs-node

Bumps [tar](https://github.com/isaacs/node-tar) to 6.2.1 and updates ancestor dependency [@tensorflow/tfjs-node](https://github.com/tensorflow/tfjs/tree/HEAD/tfjs-node). These dependencies need to be updated together.


Updates `tar` from 6.2.0 to 6.2.1
- [Release notes](https://github.com/isaacs/node-tar/releases)
- [Changelog](https://github.com/isaacs/node-tar/blob/main/CHANGELOG.md)
- [Commits](isaacs/node-tar@v6.2.0...v6.2.1)

Updates `@tensorflow/tfjs-node` from 4.17.0 to 4.20.0
- [Release notes](https://github.com/tensorflow/tfjs/releases)
- [Changelog](https://github.com/tensorflow/tfjs/blob/master/cloudbuild-release.yml)
- [Commits](https://github.com/tensorflow/tfjs/commits/tfjs-v4.20.0/tfjs-node)

---
updated-dependencies:
- dependency-name: tar
  dependency-type: indirect
- dependency-name: "@tensorflow/tfjs-node"
  dependency-type: direct:production
...

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