add Ruby 3.3 support

(refs: rggen/rggen#173)

.github/workflows/ci.yml

@@ -8,7 +8,7 @@ jobs:
 
     strategy:
       matrix:
-        ruby: ['3.2', '3.1', '3.0']
+        ruby: ['3.3', '3.2', '3.1', '3.0']
         frozen_string_literal: ['yes', 'no']
 
     env:
@@ -44,6 +44,14 @@ jobs:
         run: |
           ${RGGEN_ROOT}/rggen-devtools/bin/checkout.rb
 
+      - name: Checkout stdgems-version gem
+        uses: actions/checkout@v4
+        with:
+          repository: taichi-ishitani/stdgems-version
+          path: stdgems-version
+          fetch-depth: 0
+          submodules: true
+
       - name: Set up Ruby
         uses: ruby/setup-ruby@v1
         with:

Gemfile

@@ -13,3 +13,15 @@ group :rggen do
   gem_patched 'facets'
   gem_patched 'rubyzip'
 end
+
+if ENV.key?('CI')
+  if ENV['GITHUB_WORKFLOW'] == 'CI'
+    require File.join(root, 'stdgems-version/lib/stdgems_version')
+    gem 'bigdecimal', StdgemsVersion.version('bigdecimal')
+    gem 'csv', StdgemsVersion.version('csv')
+  else
+    # Workaround for 64kramsystem/spreadbase#30
+    # https://github.com/64kramsystem/spreadbase/issues/30
+    gem 'bigdecimal'
+  end
+end

rggen-spreadsheet-loader.gemspec

@@ -24,8 +24,9 @@ Gem::Specification.new do |spec|
   spec.files = `git ls-files lib LICENSE CODE_OF_CONDUCT.md README.md`.split($RS)
   spec.require_paths = ['lib']
 
-  spec.required_ruby_version = '>= 3.0'
+  spec.required_ruby_version = Gem::Requirement.new('>= 3.0')
 
+  spec.add_runtime_dependency 'csv'
   spec.add_runtime_dependency 'simple_xlsx_reader', '>= 1.0.4'
   spec.add_runtime_dependency 'spreadbase', '>= 0.4.0'
   spec.add_runtime_dependency 'spreadsheet', '>= 1.2.5'