Bump rack from 2.1.4.3 to 2.2.8.1

Bumps [rack](https://github.com/rack/rack) from 2.1.4.3 to 2.2.8.1.
- [Release notes](https://github.com/rack/rack/releases)
- [Changelog](https://github.com/rack/rack/blob/main/CHANGELOG.md)
- [Commits](rack/rack@v2.1.4.3...v2.2.8.1)

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

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

Author: dependabot[bot]

Gemfile.lock

@@ -111,7 +111,7 @@ GEM
       pry (~> 0.10)
     public_suffix (4.0.1)
     racc (1.6.2)
-    rack (2.1.4.3)
+    rack (2.2.8.1)
     rack-protection (2.0.2)
       rack
     rack-test (1.1.0)