Ruby 4.0 only supports Rails 8.0+, also 8.1+ can't run (currently) on truffleruby - undefined method `[]' for class Fiber

Author: kpumuk

.github/workflows/tests.yml

@@ -17,13 +17,31 @@ jobs:
           - ruby-version: "3.3"
             rails-version: "8.0"
             code-coverage: true
+          - ruby-version: "truffleruby-head"
+            rails-version: "8.1"
+          - ruby-version: "truffleruby-head"
+            rails-version: "edge"
         exclude:
           - ruby-version: "3.1"
             rails-version: "8.0"
           - ruby-version: "3.1"
             rails-version: "8.1"
           - ruby-version: "3.1"
             rails-version: "edge"
+          - ruby-version: "3.2"
+            rails-version: "edge"
+          - ruby-version: "4.0"
+            rails-version: "6.1"
+          - ruby-version: "4.0"
+            rails-version: "7.0"
+          - ruby-version: "4.0"
+            rails-version: "7.1"
+          - ruby-version: "4.0"
+            rails-version: "7.2"
+          - ruby-version: "truffleruby"
+            rails-version: "8.1"
+          - ruby-version: "truffleruby"
+            rails-version: "edge"
     env:
       BUNDLE_GEMFILE: ${{ github.workspace }}/gemfiles/rails_${{ matrix.rails-version }}.gemfile