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

Author: renovate[bot]

.github/workflows/test.yml

@@ -12,7 +12,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v4.3.0
+    - uses: actions/checkout@v6.0.2
     - name: Set up JDK 11
       uses: actions/setup-java@v4.7.1
       with: