rake.yml in mimoco-0.3.1

- old
+ new

@@ -1,25 +1,21 @@
 # see also https://github.com/whitequark/parser/blob/master/.github/workflows/test.yml
 name: Rake
 
-#on: [push, pull_request]
 on: [push]
 
 jobs:
   test:
     strategy:
       fail-fast: false
       matrix:
-#        os: [ubuntu-latest, macos-latest]
         os: [ubuntu-latest]
-        # Due to https://github.com/actions/runner/issues/849, we have to use quotes for '3.0'
-#        ruby: [2.5, 2.6, 2.7, '3.0', head, jruby, jruby-head, truffleruby, truffleruby-head]
-        ruby: ["2.7.2", "3.0.1", 3.1.0]
+        ruby: ["2.7", "3.0", "3.1", head]
         test_command: ["bundle exec rake test"]
     runs-on: ${{ matrix.os }}
 
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v3
     - uses: ruby/setup-ruby@v1
       with:
         ruby-version: ${{ matrix.ruby }}
     - name: Bundle install
       run: |