Update actions/checkout action to v3.6.0

Author: renovate[bot]

.github/workflows/maven-build.yaml

@@ -12,7 +12,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v3.0.2
+        uses: actions/checkout@v3.6.0
       - name: Set up JDK
         uses: actions/[email protected]
         with: