Bump rack from 2.2.4 to 2.2.8 (#137)

Bumps [rack](https://github.com/rack/rack) from 2.2.4 to 2.2.8.
- [Release notes](https://github.com/rack/rack/releases)
- [Changelog](https://github.com/rack/rack/blob/main/CHANGELOG.md)
- [Commits](rack/rack@2.2.4...v2.2.8)

---
updated-dependencies:
- dependency-name: rack
  dependency-type: indirect
...

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

Author: dependabot[bot]

Gemfile.lock

@@ -98,7 +98,7 @@ GEM
     puma (5.6.8)
       nio4r (~> 2.0)
     racc (1.7.3)
-    rack (2.2.4)
+    rack (2.2.8)
     rack-protection (2.2.3)
       rack
     rack-rewrite (1.5.1)