Update docker/build-push-action digest to 4976231

Author: renovate[bot]

Diff for: .github/workflows/docker-image.yml

@@ -39,7 +39,7 @@ jobs:
             type=semver,pattern={{major}}.{{minor}}
 
       - name: Build and push Docker images
-        uses: docker/build-push-action@9f6f8c940b91232557f8699b21341a08624a8dce
+        uses: docker/build-push-action@4976231911ebf5f32aad765192d35f942aa48cb8
         with:
           context: .
           push: ${{ github.event_name != 'pull_request' }}