Edge Rails no longer supports Ruby < 3.1

Author: amatsuda

.github/workflows/ruby.yml

@@ -34,11 +34,11 @@ jobs:
             gemfile: gemfiles/Gemfile-rails.5.2.x
         experimental: [false]
         include:
-          - ruby: 2.7
+          - ruby: 3.1
             os: ubuntu-latest
             gemfile: gemfiles/Gemfile-rails-edge
             experimental: true
-          - ruby: "3.0"
+          - ruby: 3.2
             os: ubuntu-latest
             gemfile: gemfiles/Gemfile-rails-edge
             experimental: true