Update SGLang container URI in Gemma 3n deployment notebook.

PiperOrigin-RevId: 776711854

Author: vertex-mg-bot

notebooks/community/model_garden/model_garden_gemma3n_deployment_on_vertex.ipynb

@@ -235,7 +235,7 @@
         "hf_model_id = \"google/\" + base_model_name\n",
         "\n",
         "# The pre-built serving docker images.\n",
-        "SGLANG_DOCKER_URI = \"us-docker.pkg.dev/vertex-ai/vertex-vision-model-garden-dockers/pytorch-hf-tgi-serve:sglang-experimental-20250626_0900_RC00\"\n",
+        "SGLANG_DOCKER_URI = \"us-docker.pkg.dev/deeplearning-platform-release/vertex-model-garden/sglang-serve.cu124.0-4.ubuntu2204.py310:20250626-1121-rc0\"\n",
         "\n",
         "# @markdown Choose whether to use a [Spot VM](https://cloud.google.com/compute/docs/instances/spot) for the deployment.\n",
         "is_spot = False  # @param {type:\"boolean\"}\n",