Update actions/checkout action to v5

Author: renovate[bot]

.github/workflows/publish.yml

@@ -10,7 +10,7 @@ jobs:
     name: Build with Java 21
     steps:
       - name: Checkout Repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
       - name: Login to GitHub Container Registry
         uses: docker/login-action@v3
         with:

.github/workflows/test.yml

@@ -12,7 +12,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout Repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
       - name: Set up JDK 21
         uses: actions/setup-java@v4
         with: