Ruby 2.7 no longer works with latest Rails.

Author: dblock

.github/workflows/test.yml

@@ -11,22 +11,18 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        ruby:
-          - "2.7"
-          - "3.0"
-          - "3.1"
-          - "3.2"
         gemfile:
-          - { file: rails_6, experimental: false }
-          - { file: rails_6_1, experimental: false }
-          - { file: rails_7, experimental: false }
-          - { file: rails_edge, experimental: true }
+          - { ruby: '2.7', file: rails_6, experimental: false }
+          - { ruby: '3.0', file: rails_6_1, experimental: false }
+          - { ruby: '3.1', file: rails_7, experimental: false }
+          - { ruby: '3.2', file: rails_7, experimental: false }
+          - { ruby: '3.2' ,file: rails_edge, experimental: true }
     steps:
       - uses: actions/checkout@v3
       - name: Set up Ruby
         uses: ruby/setup-ruby@v1
         with:
-          ruby-version: ${{ matrix.ruby }}
+          ruby-version: ${{ matrix.entry.ruby }}
           bundler-cache: true
       - name: Setup Firefox
         uses: browser-actions/setup-firefox@latest