Bump ssri from 6.0.1 to 6.0.2 in /test/webpack-versions/4.44.2 (#441)

Bumps [ssri](https://github.com/npm/ssri) from 6.0.1 to 6.0.2.
- [Release notes](https://github.com/npm/ssri/releases)
- [Changelog](https://github.com/npm/ssri/blob/v6.0.2/CHANGELOG.md)
- [Commits](npm/ssri@v6.0.1...v6.0.2)

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

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

Author: dependabot[bot]