Update rack requirement from ~> 2.0 to >= 2, < 4

Updates the requirements on [rack](https://github.com/rack/rack) to permit the latest version.
- [Release notes](https://github.com/rack/rack/releases)
- [Changelog](https://github.com/rack/rack/blob/main/CHANGELOG.md)
- [Commits](rack/rack@v2.2.6.2...v2.2.6.3)

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

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

Gemfile.lock

@@ -8,7 +8,7 @@ PATH
       activesupport (>= 5.2, < 8)
       cable_ready (>= 5.0.0.pre10)
       nokogiri (~> 1.0)
-      rack (~> 2.0)
+      rack (>= 2, < 4)
       railties (>= 5.2, < 8)
       redis (>= 4.0, < 6.0)
 
@@ -131,7 +131,7 @@ GEM
     parser (3.2.1.0)
       ast (~> 2.4.1)
     racc (1.6.2)
-    rack (2.2.6.2)
+    rack (2.2.6.3)
     rack-test (2.0.2)
       rack (>= 1.3)
     rails (7.0.4.2)

stimulus_reflex.gemspec

@@ -48,7 +48,7 @@ Gem::Specification.new do |gem|
 
   gem.add_dependency "cable_ready", ">= 5.0.0.pre10"
   gem.add_dependency "nokogiri", "~> 1.0"
-  gem.add_dependency "rack", "~> 2.0"
+  gem.add_dependency "rack", ">= 2", "< 4"
   gem.add_dependency "redis", ">= 4.0", "< 6.0"
 
   gem.add_development_dependency "bundler", "~> 2.0"