Reorganize gemspec and Gemfile

.rubocop.yml

@@ -17,6 +17,8 @@ AllCops:
     - 'bin/spring'
     - 'db/schema.rb'
     - 'examples/**/*'
+  # Match the Ruby version specified in the gemspec.
+  TargetRubyVersion: 3.0
 
 # Zammad StyleGuide
 

.rubocop_todo.yml

@@ -1,15 +1,3 @@
-Gemspec/RequiredRubyVersion:
-  Enabled: false
-
-Gemspec/RequireMFA:
-  Enabled: false
-
-Gemspec/AddRuntimeDependency:
-  Enabled: false
-
-Gemspec/DevelopmentDependencies:
-  Enabled: false
-
 Naming/PredicateMethod:
   Enabled: false
 

Gemfile

@@ -1,4 +1,16 @@
 source 'https://rubygems.org'
 
-# Specify your gem's dependencies in zammad_api.gemspec
+# runtime dependencies are defined in zammad_api.gemspec
 gemspec
+
+# development dependencies
+group :development, :test do
+  gem 'bundler', '>= 2.2.10'
+  gem 'rake'
+  gem 'rspec'
+  gem 'rubocop'
+  gem 'rubocop-performance'
+  gem 'rubocop-rake'
+  gem 'rubocop-rspec'
+  gem 'webmock'
+end

zammad_api.gemspec

@@ -12,6 +12,7 @@ Gem::Specification.new do |spec|
   spec.description   = 'Ruby wrapper for the Zammad API v1.0.'
   spec.homepage      = 'https://github.com/zammad/zammad-api-client-ruby'
   spec.licenses = ['AGPL-3.0-only', 'MIT']
+  spec.required_ruby_version = '>= 3.0' # Same as TargetRubyVersion in .rubocop.yml.
 
   spec.metadata['allowed_push_host'] = 'https://rubygems.org'
 
@@ -24,13 +25,4 @@ Gem::Specification.new do |spec|
   spec.require_paths = ['lib']
 
   spec.add_dependency 'faraday', '~> 2'
-
-  spec.add_development_dependency 'bundler', '>= 2.2.10'
-  spec.add_development_dependency 'rake'
-  spec.add_development_dependency 'rspec'
-  spec.add_development_dependency 'rubocop'
-  spec.add_development_dependency 'rubocop-performance'
-  spec.add_development_dependency 'rubocop-rake'
-  spec.add_development_dependency 'rubocop-rspec'
-  spec.add_development_dependency 'webmock'
 end