chore(deps): bump tar and gitly in /docs (#1898)

Bumps [tar](https://github.com/isaacs/node-tar) to 7.5.9 and updates ancestor dependency [gitly](https://github.com/iwatakeshi/gitly). These dependencies need to be updated together.


Updates `tar` from 6.2.1 to 7.5.9
- [Release notes](https://github.com/isaacs/node-tar/releases)
- [Changelog](https://github.com/isaacs/node-tar/blob/main/CHANGELOG.md)
- [Commits](isaacs/node-tar@v6.2.1...v7.5.9)

Updates `gitly` from 2.5.3 to 3.2.2
- [Release notes](https://github.com/iwatakeshi/gitly/releases)
- [Commits](iwatakeshi/gitly@v2.5.3...v3.2.2)

---
updated-dependencies:
- dependency-name: tar
  dependency-version: 7.5.9
  dependency-type: indirect
- dependency-name: gitly
  dependency-version: 3.2.2
  dependency-type: direct:development
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]