Bump actions/checkout from 5.0.1 to 6.0.0 (#219)

Author: dependabot[bot]

.github/workflows/test.yml

@@ -18,7 +18,7 @@ jobs:
 
     steps:
       - name: Check out code
-        uses: actions/checkout@v5.0.1
+        uses: actions/checkout@v6.0.0
 
       - name: Install Pandoc
         uses: pandoc/actions/[email protected]