chore(deps): Bump fetch-har from 2.3.0 to 2.3.1 (#550)

Bumps [fetch-har](https://github.com/readmeio/fetch-har) from 2.3.0 to 2.3.1.
- [Release notes](https://github.com/readmeio/fetch-har/releases)
- [Changelog](https://github.com/readmeio/fetch-har/blob/master/CHANGELOG.md)
- [Commits](readmeio/fetch-har@2.3.0...2.3.1)

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

Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>