Update docker/build-push-action digest to cb8fc75

Author: renovate[bot]

.github/workflows/docker-publish.yml

@@ -71,7 +71,7 @@ jobs:
       # https://github.com/docker/build-push-action
       - name: Build and push Docker image
         id: build-and-push
-        uses: docker/build-push-action@ccc2b40e9ea6518f9252a22a990f8e868370f62e
+        uses: docker/build-push-action@cb8fc7586f9ad9441b20c33e0f6e8b1b58d8b4c6
         with:
           context: .
           push: ${{ github.event_name != 'pull_request' }}