Bump ava from 2.2.0 to 3.8.1

Bumps [ava](https://github.com/avajs/ava) from 2.2.0 to 3.8.1.
- [Release notes](https://github.com/avajs/ava/releases)
- [Commits](avajs/ava@v2.2.0...v3.8.1)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Author: dependabot-preview[bot]