Merge pull request #97 from fluent/ruby_versions.yml

CI: Introduce ruby_versions.yml to add supported Ruby versions automatically

Author: kenhys

.github/workflows/test.yml

@@ -4,14 +4,24 @@ on:
     branches: [master]
   pull_request:
     branches: [master]
+  schedule:
+    - cron: '0 0 1 * *'
 jobs:
+  ruby-versions:
+    uses: ruby/actions/.github/workflows/ruby_versions.yml@master
+    with:
+      engine: cruby
+      min_version: 3.1
   build:
+    needs: ruby-versions
     runs-on: ${{ matrix.os }}
     strategy:
       fail-fast: false
       matrix:
         os: ['ubuntu-latest']
-        ruby: [ '3.4', '3.3', '3.2', '3.1' ]
+        ruby: ${{ fromJson(needs.ruby-versions.outputs.versions) }}
+        exclude:
+          - ruby: head
 
     name: Ruby ${{ matrix.ruby }} on ${{ matrix.os }}
     steps: