Bump actions/checkout from 5 to 6 (#2851)

Author: dependabot[bot]

.github/workflows/docker.yml

@@ -22,7 +22,7 @@ jobs:
         uses: docker/setup-buildx-action@v3
 
       - name: Checkout repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Log in to the Container registry
         uses: docker/login-action@v3
@@ -62,7 +62,7 @@ jobs:
         uses: docker/setup-buildx-action@v3
 
       - name: Checkout repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Log in to the Container registry
         uses: docker/login-action@v3