Update actions/checkout action to v5 (#138)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/maven-build-and-test.yaml

@@ -34,7 +34,7 @@ jobs:
     steps:
       # Check out Git repository
       - name: Checkout code
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       # Set up environment with Java and Maven
       - name: Setup JDK