Update benchmarks.yml

Author: juliagmt-google

.github/workflows/benchmarks.yml

@@ -137,7 +137,7 @@ on:
         #     path: xla/results
 jobs:
   build-xla-gpu-and-test:
-    runs-on: "linux-x86-n2-16" #linux-x86-g2-48-l4-4gpu # Use a GPU-enabled runner
+    runs-on: "linux-x86-g2-48-l4-4gpu" #linux-x86-n2-16 # Use a GPU-enabled runner 
     container:
       image: "gcr.io/tensorflow-testing/nosla-cuda12.3-cudnn9.1-ubuntu20.04-manylinux2014-multipython:latest"
       options: --gpus all --privileged  # Might need privileged mode, use with caution