Merge pull request #28 from ruby/dependabot/github_actions/actions/checkout-4

Bump actions/checkout from 3 to 4

Author: hsbt

.github/workflows/test.yml

@@ -16,7 +16,7 @@ jobs:
         - { os: windows-latest, ruby: mswin }
     runs-on: ${{ matrix.os }}
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Set up Ruby
       uses: ruby/setup-ruby@v1
       with: