Merge pull request #3 from opennet-initiative/dependabot/github_actio…

…ns/actions/checkout-4

Bump actions/checkout from 3 to 4

.github/workflows/pandoc.yml

@@ -8,7 +8,7 @@ jobs:
       image: docker://pandoc/latex
       options: --entrypoint=sh
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: install koma-script
         run: |
           tlmgr update --self