Update actions/checkout action to v4

Author: renovate[bot]

.github/workflows/publish.yaml

@@ -14,7 +14,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Set up JDK 21
         uses: actions/setup-java@v3