Drop 7.1 files / identifiers from the master branch

Best I can tell, the intent is to keep ONE version on master or
versioned branch but for some reason 7.1 added a 7.2.beta and kept it
around for a bit. I think this brings it back to the original intent.

Long term: nuke the gemfiles directory. Remove gemfiles from the CI
matrix. Unify.

.github/workflows/ci.yml

@@ -18,19 +18,11 @@ jobs:
       fail-fast: false
       matrix:
         ruby:
-          - '2.7'
-          - '3.0'
           - '3.1'
           - '3.2'
           - '3.3'
         gemfile:
-          - gemfiles/rails-7.1.0.gemfile
           - gemfiles/rails-7.2.0.gemfile
-        exclude:
-          - ruby: '2.7'
-            gemfile: gemfiles/rails-7.2.0.gemfile
-          - ruby: '3.0'
-            gemfile: gemfiles/rails-7.2.0.gemfile
     env:
       BUNDLE_GEMFILE: ${{ matrix.gemfile }}
 

.rubocop.yml

@@ -1,5 +1,5 @@
 AllCops:
-  TargetRubyVersion: 2.7
+  TargetRubyVersion: 3.1
   SuggestExtensions: false
   NewCops: enable
 

minitest-rails.gemspec

@@ -15,10 +15,10 @@ Gem::Specification.new do |gem|
                       ["README.md", "UPDATING.md", "CHANGELOG.md", "LICENSE"]
   gem.require_paths = ["lib"]
 
-  gem.required_ruby_version = ">= 2.7.0"
+  gem.required_ruby_version = ">= 3.1"
 
   gem.add_dependency "minitest", "~> 5.20"
-  gem.add_dependency "railties", ">= 7.1.0", "< 8.0.0"
+  gem.add_dependency "railties", ">= 7.2.0", "< 8.0.0"
 
   gem.add_development_dependency "minitest-autotest", "~> 1.1"
   gem.add_development_dependency "minitest-focus", "~> 1.4"

test/helper.rb

@@ -26,7 +26,7 @@ class Application < ::Rails::Application
     config.secret_key_base = "abc123"
     config.hosts << "www.example.com"
     config.eager_load = false
-    config.load_defaults 7.1
+    config.load_defaults 7.2
   end
 end