CI: stop runner on correct region

Author: caic99

.github/workflows/cuda.yml

@@ -39,7 +39,7 @@ jobs:
         env:
           GTEST_COLOR: 'yes'
         run: |
-          nvidia-smi
+          /usr/local/cuda/bin/nvcc -v
           cmake -B build -DBUILD_TESTING=ON -DUSE_CUDA=ON
           cmake --build build -j4
           cmake --install build
@@ -57,7 +57,7 @@ jobs:
         with:
           aws-access-key-id: ${{ secrets.AWS_ACCESS_KEY_ID }}
           aws-secret-access-key: ${{ secrets.AWS_SECRET_ACCESS_KEY }}
-          aws-region: ${{ secrets.AWS_REGION }}
+          aws-region: us-east-2
       - name: Stop EC2 runner
         uses: machulav/ec2-github-runner@v2
         with: