Merge pull request #2 from baldowl/dependabot/github_actions/actions/checkout-4

Author: dependabot[bot]

.github/workflows/ci.yml

@@ -24,9 +24,9 @@ jobs:
     name: mruby ${{ matrix.mruby_version }}
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Clone mruby ${{ matrix.mruby_version }}
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           repository: mruby/mruby
           ref: ${{ matrix.mruby_version }}