Update run-readme-pr.yml

1 - Remove steps experiment.
2 - add at-get install pip3

Maybe releng needs to look at what's happening with pip?

Author: mikekgfb

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

@@ -19,13 +19,10 @@ jobs:
       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: |
+        set -x
+        apt-get install pip3 pip || true
+        
         echo "::group::Print machine info"
         uname -a
         echo "::endgroup::"