Bump rack from 2.2.8 to 2.2.9

Bumps [rack](https://github.com/rack/rack) from 2.2.8 to 2.2.9.
- [Release notes](https://github.com/rack/rack/releases)
- [Changelog](https://github.com/rack/rack/blob/main/CHANGELOG.md)
- [Commits](rack/rack@v2.2.8...v2.2.9)

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

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

Author: dependabot[bot]

Gemfile.lock

@@ -6,7 +6,7 @@ GEM
     passenger (6.0.22)
       rack
       rake (>= 0.8.1)
-    rack (2.2.8)
+    rack (2.2.9)
     rack-protection (2.2.4)
       rack
     rake (13.1.0)
@@ -20,6 +20,7 @@ GEM
 
 PLATFORMS
   x86_64-darwin-22
+  x86_64-linux
 
 DEPENDENCIES
   passenger (>= 6.0.22)