Update actions in docker.build.yaml

Author: kdambekalns

.github/workflows/docker.build.yaml

@@ -71,7 +71,7 @@ jobs:
           password: ${{ secrets.GOOGLE_ARTIFACTS_PASSWORD_DOCKER }}
 
       - name: Build Docker image
-        uses: docker/build-push-action@v5
+        uses: docker/build-push-action@v6
         with:
           context: .
           platforms: linux/amd64,linux/arm64