style: update actions/checkout to v6.1.0 with bot token

Author: suztomo

.github/workflows/java-cloud-bom-update-readme-table.yaml

@@ -24,9 +24,9 @@ jobs:
       pull-requests: write
     steps:
     - name: Check out repository
-      uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      uses: actions/checkout@d23441a48e516b6c34aea4fa41551a30e30af803 # v6.1.0
       with:
-        persist-credentials: false
+        token: ${{ secrets.CLOUD_JAVA_BOT_GITHUB_TOKEN }}
 
     - name: Set up Python
       uses: actions/setup-python@ece7cb06caefa5fff74198d8649806c4678c61a1 # v6