added pull github setp in test workflow

Author: yunchengyang515

.github/workflows/set-up-stackql.yml

@@ -28,4 +28,8 @@ jobs:
 
     - name: Validate Stackql Version
       run: |
-        stackql --version
+        stackql --version
+
+    - name: Pull Github
+      run: |
+        stackql exec "REGISTRY PULL github v23.01.00104;"" --auth="${AUTH}"