Remove Ruby 3.0 build from CI

We don't set a required ruby version in the gemspec so taking the liberty to drop Ruby 3.0 from CI to lessen the burden of gemfile management. Several dependencies have since had new releases that have different Ruby version requirements (sqlite, zeitwerk, sass-embedded, net-imap, etc.) making it difficult to install a common demoninator that will run for all CI builds. Existing PRs have failed CI due to this.

Author: javierjulio

.github/workflows/ci.yml

@@ -6,7 +6,6 @@ jobs:
       fail-fast: false
       matrix:
         ruby-version:
-          - "3.0"
           - "3.1"
           - "3.2"
           - "3.3"
@@ -19,10 +18,6 @@ jobs:
           - gemfiles/rails_7_1_sprockets.gemfile
           - gemfiles/rails_main_sprockets.gemfile
         exclude:
-          - ruby-version: "3.0"
-            gemfile: gemfiles/rails_main_propshaft.gemfile
-          - ruby-version: "3.0"
-            gemfile: gemfiles/rails_main_sprockets.gemfile
           - ruby-version: "3.1"
             gemfile: gemfiles/rails_main_propshaft.gemfile
           - ruby-version: "3.1"
@@ -45,14 +40,6 @@ jobs:
           ruby-version: ${{ matrix.ruby-version }}
           bundler-cache: true
 
-      # This prevents a "Failed to build gem native extension" error when
-      # running `bundle install` inside a Rails app that is generated for
-      # testing. The error occurs only in CI, and only when using Ruby 3.0 and
-      # Rails >= 7.1.
-      - name: Install sass-embedded gem
-        if: ${{ matrix.ruby-version == '3.0' }}
-        run: gem install sass-embedded
-
       - name: Run tests
         run: |
           bundle exec rake