Bump rack from 3.0.8 to 3.0.9.1

Bumps [rack](https://github.com/rack/rack) from 3.0.8 to 3.0.9.1.
- [Release notes](https://github.com/rack/rack/releases)
- [Changelog](https://github.com/rack/rack/blob/main/CHANGELOG.md)
- [Commits](rack/rack@v3.0.8...v3.0.9.1)

---
updated-dependencies:
- dependency-name: rack
  dependency-type: direct:production
...

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

Gemfile.lock

@@ -124,7 +124,7 @@ GEM
  puma (6.4.2)
  nio4r (~> 2.0)
  racc (1.7.3)
- rack (3.0.8)
+ rack (3.0.9.1)
  rack-accept (0.4.5)
  rack (>= 0.4)
  rack-cors (2.0.1)