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

@@ -117,9 +117,9 @@ GEM
     parslet (2.0.0)
     public_suffix (4.0.7)
     racc (1.7.3)
-    rack (2.2.8.1)
-    rack-contrib (2.3.0)
-      rack (~> 2.0)
+    rack (2.2.9)
+    rack-contrib (2.5.0)
+      rack (< 4)
     rack-livereload (0.3.17)
       rack
     rb-fsevent (0.11.1)