Bump rack from 2.2.14 to 2.2.18

Bumps [rack](https://github.com/rack/rack) from 2.2.14 to 2.2.18.
- [Release notes](https://github.com/rack/rack/releases)
- [Changelog](https://github.com/rack/rack/blob/main/CHANGELOG.md)
- [Commits](rack/rack@v2.2.14...v2.2.18)

---
updated-dependencies:
- dependency-name: rack
  dependency-version: 2.2.18
  dependency-type: direct:production
...

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

Author: dependabot[bot]

Gemfile

@@ -4,7 +4,7 @@ source 'https://rubygems.org'
 
 gemspec
 
-gem 'rack', '2.2.14'
+gem 'rack', '2.2.18'
 
 gem 'capybara', '>= 3.35.0'
 gem 'cuprite', '>= 0.14.0'

Gemfile.lock

@@ -45,7 +45,7 @@ GEM
     prism (0.24.0)
     public_suffix (6.0.1)
     racc (1.8.1)
-    rack (2.2.14)
+    rack (2.2.18)
     rack-test (2.2.0)
       rack (>= 1.3)
     rainbow (3.1.1)
@@ -107,7 +107,7 @@ DEPENDENCIES
   capybara_mock!
   cuprite (>= 0.14.0)
   nokogiri (>= 1.16.0)
-  rack (= 2.2.14)
+  rack (= 2.2.18)
   rake (~> 13.0)
   rspec (~> 3.0)
   rubocop (~> 1.21)