Bump rack-test from 0.8.3 to 1.0.0
Bump rack-test from 0.8.3 to 1.0.0

Bumps [rack-test](https://github.com/rack-test/rack-test) from 0.8.3 to 1.0.0.
- [Release notes](https://github.com/rack-test/rack-test/releases)
- [Changelog](https://github.com/rack-test/rack-test/blob/master/History.md)
- [Commits](https://github.com/rack-test/rack-test/compare/v0.8.3...v1.0.0)

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