chore(deps): Update actions/checkout action to v6

Author: renovate[bot]

.github/workflows/build.yml

@@ -12,7 +12,7 @@ jobs:
         if: ${{ github.event_name != 'pull_request' || github.repository != github.event.pull_request.head.repo.full_name }}
         runs-on: "ubuntu-latest"
         steps:
-            - uses: actions/checkout@v5
+            - uses: actions/checkout@v6
             - name: Set up JDK
               uses: actions/setup-java@v5
               with: