Switch to Ruby 2.6 for better compatibility with Bundler 1.17.2

Author: jedisct1

.github/workflows/jekyll-gh-pages.yml

@@ -28,18 +28,15 @@ jobs:
       - name: Setup Ruby
         uses: ruby/setup-ruby@v1
         with:
-          ruby-version: '3.2'
-          bundler-cache: false
+          ruby-version: '2.6'
+          bundler-cache: true
           working-directory: www
 
       - name: Build with Jekyll
         run: |
           cd www
-          gem install bundler -v "~> 2.6"
-          # Use the full path to the new bundler to avoid using the pre-installed one
-          $(which bundle) --version
-          $(which bundle) install
-          $(which bundle) exec jekyll build
+          bundle install
+          bundle exec jekyll build
         env:
           JEKYLL_ENV: production
 

www/Gemfile

@@ -7,7 +7,7 @@ gem "github-pages", group: :jekyll_plugins
 # Windows and JRuby does not include zoneinfo files, so bundle the tzinfo-data gem
 # and associated library.
 platforms :mingw, :x64_mingw, :mswin, :jruby do
-  gem "tzinfo", "~> 2.0"
+  gem "tzinfo", "~> 1.2"
   gem "tzinfo-data"
 end
 
@@ -19,7 +19,4 @@ gem "wdm", "~> 0.1.1", :platforms => [:mingw, :x64_mingw, :mswin]
 gem "http_parser.rb", "~> 0.6.0", :platforms => [:jruby]
 
 # Needed for Ruby 3.0+
-gem "webrick", "~> 1.8"
-
-# Explicitly specify ffi version to avoid compatibility issues
-gem "ffi", "~> 1.15.5"
+gem "webrick", "~> 1.7"