Bump rack from 3.0.8 to 3.1.3

Bumps [rack](https://github.com/rack/rack) from 3.0.8 to 3.1.3.
- [Release notes](https://github.com/rack/rack/releases)
- [Changelog](https://github.com/rack/rack/blob/main/CHANGELOG.md)
- [Commits](rack/rack@v3.0.8...v3.1.3)

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

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

Gemfile.lock

@@ -111,7 +111,7 @@ GEM
       forwardable-extended (~> 2.6)
     public_suffix (4.0.7)
     racc (1.7.1)
-    rack (3.0.8)
+    rack (3.1.3)
     rb-fsevent (0.11.1)
     rb-inotify (0.10.1)
       ffi (~> 1.0)