build(deps): bump rack from 3.0.10 to 3.1.18

Bumps [rack](https://github.com/rack/rack) from 3.0.10 to 3.1.18.
- [Release notes](https://github.com/rack/rack/releases)
- [Changelog](https://github.com/rack/rack/blob/main/CHANGELOG.md)
- [Commits](rack/rack@v3.0.10...v3.1.18)

---
updated-dependencies:
- dependency-name: rack
  dependency-version: 3.1.18
  dependency-type: indirect
...

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

Author: dependabot[bot]

Gemfile.lock

@@ -71,7 +71,7 @@ GEM
     pathutil (0.16.2)
       forwardable-extended (~> 2.6)
     public_suffix (5.0.5)
-    rack (3.0.10)
+    rack (3.1.18)
     rack-proxy (0.7.7)
       rack
     rake (13.2.1)