chore(deps): update actions/checkout action to v7

Author: renovate[bot]

.github/workflows/docker-build.yml

@@ -43,7 +43,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v6
+        uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7
 
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v4