Merge pull request #13 from ruby/dependabot/github_actions/actions/checkout-3

Bump actions/checkout from 2 to 3

Author: hsbt

.github/workflows/test.yml

@@ -11,7 +11,7 @@ jobs:
         os: [ ubuntu-latest, macos-latest ]
     runs-on: ${{ matrix.os }}
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v3
     - name: Install packages
       if: ${{ matrix.os == 'ubuntu-latest' }}
       run: |