Update run-readme-pr.yml

Can we mix `steps:` with `script: |` in git workflows?

Testing 123 testing!

Author: mikekgfb

.github/workflows/run-readme-pr.yml

@@ -18,6 +18,13 @@ jobs:
       gpu-arch-type: cuda
       gpu-arch-version: "12.4"
       timeout: 60
+      steps:
+        - name: Checkout repo
+          uses: actions/checkout@v3
+        - name: Setup Python
+          uses: actions/setup-python@v4
+          with:
+            python-version: '3.10.11'
       script: |
         echo "::group::Print machine info"
         uname -a