Bump rack from 2.2.3 to 2.2.3.1

Bumps [rack](https://github.com/rack/rack) from 2.2.3 to 2.2.3.1.
- [Release notes](https://github.com/rack/rack/releases)
- [Changelog](https://github.com/rack/rack/blob/main/CHANGELOG.md)
- [Commits](rack/rack@2.2.3...2.2.3.1)

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

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

Author: dependabot[bot]

Gemfile.lock

@@ -102,7 +102,7 @@ GEM
     public_suffix (4.0.6)
     racc (1.6.0)
     racc (1.6.0-java)
-    rack (2.2.3)
+    rack (2.2.3.1)
     rack-protection (2.2.0)
       rack
     rails-dom-testing (2.0.3)