Update actions/checkout action to v5

Author: renovate[bot]

.github/workflows/maven.yml

@@ -40,7 +40,7 @@ jobs:
         java: [ 8, 11, 17 ]
     steps:
       - name: Checkout code
-        uses: actions/checkout@v4.2.2
+        uses: actions/checkout@v5.0.0
       - name: Set up cache
         uses: actions/cache@v4.2.4
         with: