Drop support for Ruby 2.7

Author: horgh

.github/workflows/test.yml

@@ -15,7 +15,6 @@ jobs:
         os: [ubuntu-latest, windows-latest, macos-latest]
         version:
           [
-            2.7,
             '3.0',
             3.1,
             3.2,

.rubocop.yml

@@ -1,5 +1,5 @@
 AllCops:
-    TargetRubyVersion: 2.7
+    TargetRubyVersion: '3.0'
     NewCops: enable
 
 # Metrics.

CHANGELOG.md

@@ -6,6 +6,8 @@
   reasons output codes and reasons are currently in beta and are subject to
   change. We recommend that you use these beta outputs with caution and avoid
   relying on them for critical applications.
+* Ruby 3.0+ is now required. If you're using Ruby 2.7, please use version
+  2.6.0 of this gem.
 
 ## v2.6.0 (2024-07-08)
 

README.md

@@ -275,7 +275,7 @@ to the client API, please see
 
 ## Requirements
 
-This gem works with Ruby 2.7 and above.
+This gem works with Ruby 3.0 and above.
 
 ## Contributing
 

minfraud.gemspec

@@ -15,7 +15,7 @@ Gem::Specification.new do |spec|
   spec.homepage      = 'https://github.com/maxmind/minfraud-api-ruby'
   spec.license       = 'MIT'
 
-  spec.required_ruby_version = '>= 2.7.0'
+  spec.required_ruby_version = '>= 3.0'
 
   spec.files         = `git ls-files -z`.split("\x0").reject { |f| f.match(%r{^.gitignore$|^(?:\.github|dev-bin|spec)/}) }
   spec.bindir        = 'exe'