Update rack requirement from >= 1.5.0, ~> 1.5 to >= 1.5.0, < 3.0
Update rack requirement from >= 1.5.0, ~> 1.5 to >= 1.5.0, < 3.0

Updates the requirements on [rack](https://github.com/rack/rack) to permit the latest version.
- [Release notes](https://github.com/rack/rack/releases)
- [Changelog](https://github.com/rack/rack/blob/master/CHANGELOG.md)
- [Commits](https://github.com/rack/rack/commits/2.0.5)

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
kitop/rack-transform