Update actions/checkout action to v5

Author: renovate[bot]

.github/workflows/build.yml

@@ -11,7 +11,7 @@ jobs:
     name: 'Build'
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - name: Cache local Maven repository
         uses: actions/cache@v4
         with: