update Ruby

Author: route

.github/workflows/linter.yml

@@ -11,7 +11,7 @@ jobs:
      strategy:
        fail-fast: false
        matrix:
-         ruby: [ "2.7", "3.0" ]
+         ruby: ["3.1", "4.0"]
      runs-on: ubuntu-latest
      steps:
        - name: Checkout code

.github/workflows/tests.yml

@@ -11,7 +11,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        ruby: ["2.7", "3.0", "3.1", "3.2", "3.3", "3.4"]
+        ruby: ["3.1", "3.2", "3.3", "3.4", "4.0"]
     runs-on: ubuntu-latest
     env:
       FERRUM_PROCESS_TIMEOUT: 25

.rubocop.yml

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

Gemfile

@@ -2,7 +2,7 @@
 
 source "https://rubygems.org"
 
-gem "byebug", "~> 11.0", platforms: %i[mri mingw x64_mingw]
+gem "byebug", "~> 11.0", platforms: %i[mri windows]
 gem "chunky_png", "~> 1.3"
 gem "image_size", "~> 2.0"
 gem "kramdown", "~> 2.0", require: false

ferrum.gemspec

@@ -23,7 +23,7 @@ Gem::Specification.new do |s|
     "rubygems_mfa_required" => "true"
   }
 
-  s.required_ruby_version = ">= 2.7.0"
+  s.required_ruby_version = ">= 3.1"
 
   s.add_dependency "addressable",      "~> 2.5"
   s.add_dependency "base64",           "~> 0.2"