Bump rack from 2.2.8 to 2.2.8.1

Bumps [rack](https://github.com/rack/rack) from 2.2.8 to 2.2.8.1.
- [Release notes](https://github.com/rack/rack/releases)
- [Changelog](https://github.com/rack/rack/blob/main/CHANGELOG.md)
- [Commits](rack/rack@v2.2.8...v2.2.8.1)

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

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

Gemfile.lock

@@ -66,7 +66,7 @@ GEM
     puma (6.3.1)
       nio4r (~> 2.0)
     racc (1.7.1)
-    rack (2.2.8)
+    rack (2.2.8.1)
     rack-protection (3.1.0)
       rack (~> 2.2, >= 2.2.4)
     rainbow (3.1.1)