Fix github action CI for GPU (#625)

Summary: Pull Request resolved: #625

Differential Revision: D53292685

.github/workflows/ci_gpu.yml

@@ -8,11 +8,12 @@ on:
     branches:
       - main
 
+jobs:
   unittest_multi_gpu:
     runs-on: linux.4xlarge.nvidia.gpu
     steps:
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v5
 
       - name: Set up Python
         uses: actions/setup-python@v2
@@ -31,7 +32,7 @@ on:
 
 
   integrationtest_py39_torch_release_cuda:
-    runs-on: ubuntu-latest
+    runs-on: linux.4xlarge.nvidia.gpu
     container:
       # https://hub.docker.com/r/nvidia/cuda
       image: nvidia/cuda:12.3.1-base-ubuntu22.04