Bump rack from 3.1.17 to 3.1.18 (#3118)

Bumps [rack](https://github.com/rack/rack) from 3.1.17 to 3.1.18.
- [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/v3.1.17...v3.1.18)

---
updated-dependencies:
- dependency-name: rack
  dependency-version: 3.1.18
  dependency-type: direct:production
...

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Gemfile.lock

@@ -343,7 +343,7 @@ GEM
       activesupport (>= 3.0.0)
     raabro (1.4.0)
     racc (1.8.1)
-    rack (3.1.17)
+    rack (3.1.18)
     rack-attack (6.7.0)
       rack (>= 1.0, < 4)
     rack-mini-profiler (3.3.1)