Update actions/checkout action to v6

Author: renovate[bot]

.github/workflows/docker-image.yml

@@ -14,7 +14,7 @@ jobs:
       architectures: ${{ steps.info.outputs.architectures }}
     steps:
       - name: Checkout the repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
       - name: Get information
         id: info
         uses: home-assistant/actions/helpers/info@master
@@ -33,7 +33,7 @@ jobs:
         architecture: ${{ fromJson(needs.init.outputs.architectures) }}
     steps:
       - name: Checkout the repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
       - name: Login to DockerHub
         uses: docker/login-action@v3
         with: