add test notebook vars to workflow

Author: AgnieszkaZaba

.github/workflows/tests.yml

@@ -23,4 +23,5 @@ jobs:
         run: |
           pip install -e .
           pip install -r tests/devops_tests/requirements.txt
-          pytest -vv -rP -We tests/test_notebook_vars.py::TestNotebookVars
+          pytest -vv -rP -We tests/devops_tests/test_notebooks.py::test_run_notebooks
+          pytest -vv -rP -We tests/test_notebook_vars.py