Update actions/checkout digest to 0ad4b8f

Author: renovate-bot

.github/workflows/balena.yml

@@ -15,7 +15,7 @@ jobs:
         fleet: [gh_klutchell/adguard-home]
 
     steps:
-      - uses: actions/checkout@44c2b7a8a4ea60a981eaca3cf939b5f4305c123b # v4
+      - uses: actions/checkout@0ad4b8fadaa221de15dcec353f45205ec38ea70b # v4
       - uses: balena-io/deploy-to-balena-action@cc998b3d5e0694d9f5bbf5708b504910d6d3027a # v2.0.66
         with:
           balena_token: ${{ secrets.BALENA_API_KEY }}