Add worker for smoketest github action

Author: alb-rl

.github/workflows/smoketests.yml

@@ -49,7 +49,8 @@ jobs:
 
       - name: Run smoke tests (pytest via uv)
         env:
-          # Force sequential to avoid overloading remote resources
-          PYTEST_ADDOPTS: "-n 1 -m smoketest"
+          # Use 2 workers to run files in parallel.
+          # Tests within a file are run sequentially.
+          PYTEST_ADDOPTS: "-n 2 -m smoketest"
         run: |
           uv run pytest -q -vv tests/smoketests