Update docker/build-push-action digest to ee4ca42

Author: renovate[bot]

.github/workflows/docker-publish.yml

@@ -51,7 +51,7 @@ jobs:
       # Build and push Docker image with Buildx (don't push on PR)
       # https://github.com/docker/build-push-action
       - name: Build and push Docker image
-        uses: docker/build-push-action@5cd11c3a4ced054e52742c5fd54dca954e0edd85
+        uses: docker/build-push-action@ee4ca427a2f43b6a16632044ca514c076267da23
         with:
           context: .
           push: ${{ github.event_name != 'pull_request' }}