chore(deps): update docker/build-push-action digest to 471d1dc (#336)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/docker-image.yml

@@ -24,15 +24,15 @@ jobs:
           password: ${{ secrets.GITHUB_TOKEN }}
 
       - name: ${{ github.ref == 'refs/heads/main' && 'Build and Push' || 'Test Build' }} App
-        uses: docker/build-push-action@0adf9959216b96bec444f325f1e493d4aa344497 # v6
+        uses: docker/build-push-action@471d1dc4e07e5cdedd4c2171150001c434f0b7a4 # v6
         with:
           cache-from: type=gha
           cache-to: type=gha,mode=max
           push: ${{ github.ref == 'refs/heads/main' }}
           tags: ghcr.io/spillhuset/django-system-template-app
 
       - name: ${{ github.ref == 'refs/heads/main' && 'Build and Push' || 'Test Build' }} Nginx
-        uses: docker/build-push-action@0adf9959216b96bec444f325f1e493d4aa344497 # v6
+        uses: docker/build-push-action@471d1dc4e07e5cdedd4c2171150001c434f0b7a4 # v6
         with:
           cache-from: type=gha
           cache-to: type=gha,mode=max