Bump tar-fs and mocha-headless-chrome

Bumps [tar-fs](https://github.com/mafintosh/tar-fs) to 3.1.0 and updates ancestor dependency [mocha-headless-chrome](https://github.com/direct-adv-interfaces/mocha-headless-chrome). These dependencies need to be updated together.


Updates `tar-fs` from 2.1.1 to 3.1.0
- [Commits](mafintosh/tar-fs@v2.1.1...v3.1.0)

Updates `mocha-headless-chrome` from 4.0.0 to 5.1.0
- [Release notes](https://github.com/direct-adv-interfaces/mocha-headless-chrome/releases)
- [Changelog](https://github.com/direct-adv-interfaces/mocha-headless-chrome/blob/master/CHANGELOG.md)
- [Commits](https://github.com/direct-adv-interfaces/mocha-headless-chrome/commits)

---
updated-dependencies:
- dependency-name: tar-fs
  dependency-version: 3.1.0
  dependency-type: indirect
- dependency-name: mocha-headless-chrome
  dependency-version: 5.1.0
  dependency-type: direct:development
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]