Update actions/checkout action to v6

Author: renovate[bot]

.github/workflows/Auto update AdBlock.yml

@@ -12,7 +12,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout Repo
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Download Filters
         run: |