Update docker/build-push-action digest to 0788c44

Author: renovate[bot]

.github/workflows/ci.yaml

@@ -101,7 +101,7 @@ jobs:
       - name: Build Docker image
         id: push
         timeout-minutes: 25
-        uses: docker/build-push-action@090ca155fc9b214cbcac536c450455a0e96f52c6
+        uses: docker/build-push-action@0788c444d8b4d67580213712e34a148cae3a6c4e
         with:
           context: .
           load: false