dep: bump tailwindcss-ruby to ~> 4.0

Author: flavorjones

.github/workflows/ci.yml

@@ -37,10 +37,7 @@ jobs:
       fail-fast: false
       matrix:
         plat: ["ubuntu", "windows", "macos"]
-        tailwind: ["--version=~>3.4.14", "--version=~>4.0.0.alpha.27"]
     runs-on: ${{matrix.plat}}-latest
-    env:
-      TAILWINDCSSOPTS: ${{ matrix.tailwind }}
     steps:
       - uses: actions/checkout@v4
       - uses: ruby/setup-ruby@v1

.github/workflows/upstream.yml

@@ -42,10 +42,8 @@ jobs:
       matrix:
         plat: ["ubuntu"]
         ref: ["7-2-stable", "8-0-stable", "main"]
-        tailwind: ["--version=~>3.4.14", "--version=~>4.0.0.alpha.27"]
     env:
       RAILSOPTS: --git=https://github.com/rails/rails --ref=${{ matrix.ref }}
-      TAILWINDCSSOPTS: ${{ matrix.tailwind }}
     steps:
       - uses: actions/checkout@v4
       - uses: ruby/setup-ruby@v1

tailwindcss-rails.gemspec

@@ -19,5 +19,5 @@ Gem::Specification.new do |spec|
   spec.files = Dir["{app,lib}/**/*", "MIT-LICENSE", "Rakefile", "README.md"]
 
   spec.add_dependency "railties", ">= 7.0.0"
-  spec.add_dependency "tailwindcss-ruby"
+  spec.add_dependency "tailwindcss-ruby", "~> 4.0"
 end

test/integration/user_journey_test.sh

@@ -27,7 +27,6 @@ bundle add rails --skip-install ${RAILSOPTS:-}
 
 # use the tailwindcss-rails under test
 bundle add tailwindcss-rails --skip-install --path="../.."
-bundle add tailwindcss-ruby --skip-install ${TAILWINDCSSOPTS:-}
 bundle install
 bundle show --paths
 bundle binstubs --all