Bump rack-contrib from 2.3.0 to 2.5.0

Bumps [rack-contrib](https://github.com/rack/rack-contrib) from 2.3.0 to 2.5.0.
- [Release notes](https://github.com/rack/rack-contrib/releases)
- [Changelog](https://github.com/rack/rack-contrib/blob/main/CHANGELOG.md)
- [Commits](rack/rack-contrib@v2.3.0...v2.5.0)

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

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

Author: dependabot[bot]

Gemfile.lock

@@ -353,9 +353,9 @@ GEM
     puma (6.6.0)
       nio4r (~> 2.0)
     racc (1.6.2)
-    rack (2.2.6.4)
-    rack-contrib (2.3.0)
-      rack (~> 2.0)
+    rack (2.2.11)
+    rack-contrib (2.5.0)
+      rack (< 4)
     rack-rewrite (1.5.1)
     rack-test (2.1.0)
       rack (>= 1.3)