Support Ruby 3.1 through 3.4

This drops support for Ruby 3.0 which is EOL.

.github/workflows/ruby.yml

@@ -20,7 +20,7 @@ jobs:
 
     strategy:
       matrix:
-        ruby: ["3.0", "3.1", "3.2", "3.3"]
+        ruby: ["3.1", "3.2", "3.3", "3.4"]
 
     steps:
       - uses: actions/checkout@v4
@@ -58,7 +58,7 @@ jobs:
       - name: Set up Ruby
         uses: ruby/setup-ruby@v1
         with:
-          ruby-version: "3.2"
+          ruby-version: "3.3"
           bundler-cache: true
       - name: Run RuboCop
         run: bundle exec rubocop -P

.rubocop.yml

@@ -9,7 +9,7 @@ require:
 
 AllCops:
   NewCops: enable
-  TargetRubyVersion: 3.0
+  TargetRubyVersion: 3.1
 
 # Put development dependencies in the gemspec so rubygems.org knows about them
 Gemspec/DevelopmentDependencies:

atspi_app_driver.gemspec

@@ -10,8 +10,9 @@ Gem::Specification.new do |spec|
 
   spec.summary = "Test GirFFI-based applications using Atspi"
   spec.homepage = "http://www.github.com/mvz/atspi_app_driver"
+
   spec.license = "MIT"
-  spec.required_ruby_version = ">= 3.0.0"
+  spec.required_ruby_version = ">= 3.1.0"
 
   spec.metadata["homepage_uri"] = spec.homepage
   spec.metadata["source_code_uri"] = "https://github.com/mvz/atspi_app_driver"