chore(deps): Bump tar in /examples/blockly-rtc (#2327)

Bumps  and [tar](https://github.com/isaacs/node-tar). These dependencies needed to be updated together.

Updates `tar` from 6.1.11 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@v6.1.11...v6.2.1)

Updates `tar` from 4.4.13 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@v6.1.11...v6.2.1)

---
updated-dependencies:
- dependency-name: tar
  dependency-type: indirect
- dependency-name: tar
  dependency-type: indirect
...

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