Bump rack from 3.2.4 to 3.2.6

Bumps [rack](https://github.com/rack/rack) from 3.2.4 to 3.2.6.
- [Release notes](https://github.com/rack/rack/releases)
- [Changelog](https://github.com/rack/rack/blob/main/CHANGELOG.md)
- [Commits](https://github.com/rack/rack/compare/v3.2.4...v3.2.6)

---
updated-dependencies:
- dependency-name: rack
  dependency-version: 3.2.6
  dependency-type: indirect
...

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

Gemfile.lock

@@ -207,7 +207,7 @@ GEM
       nio4r (~> 2.0)
     raabro (1.4.0)
     racc (1.8.1)
-    rack (3.2.4)
+    rack (3.2.6)
     rack-session (2.1.1)
       base64 (>= 0.1.0)
       rack (>= 3.0.0)