Merge pull request #1398 from balena-os/renovate/actions-checkout-6.x

Update actions/checkout action to v6

Author: balena-renovate[bot]

.github/workflows/flowzone.yml

@@ -74,7 +74,7 @@ jobs:
     steps:
       # https://github.com/actions/checkout
       - name: Checkout
-        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5
+        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6
         with:
           submodules: true
           persist-credentials: false