Bump tar and ava (#27)

Bumps [tar](https://github.com/isaacs/node-tar) to 7.5.7 and updates ancestor dependency [ava](https://github.com/avajs/ava). These dependencies need to be updated together.


Updates `tar` from 6.2.1 to 7.5.7
- [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...v7.5.7)

Updates `ava` from 6.1.3 to 6.4.1
- [Release notes](https://github.com/avajs/ava/releases)
- [Commits](avajs/ava@v6.1.3...v6.4.1)

---
updated-dependencies:
- dependency-name: tar
  dependency-version: 7.5.7
  dependency-type: indirect
- dependency-name: ava
  dependency-version: 6.4.1
  dependency-type: direct:development
...

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