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:development
...

Signed-off-by: dependabot[bot] <[email protected]>

Gemfile.lock

@@ -20,15 +20,15 @@ GEM
     mustache (1.1.1)
     mustermann (2.0.2)
       ruby2_keywords (~> 0.0.1)
-    nokogiri (1.15.5-arm64-darwin)
+    nokogiri (1.15.5-x86_64-linux)
       racc (~> 1.4)
     parallel (1.24.0)
     parser (3.3.0.0)
       ast (~> 2.4.1)
       racc
     power_assert (2.0.3)
     racc (1.7.3)
-    rack (2.2.8)
+    rack (2.2.8.1)
     rack-protection (2.2.4)
       rack
     rainbow (3.1.1)
@@ -63,7 +63,7 @@ GEM
     unicode-display_width (2.5.0)
 
 PLATFORMS
-  ruby
+  x86_64-linux
 
 DEPENDENCIES
   rack (~> 2, >= 2.2.3)