DEBUG: try to use variable

Author: bsipocz

.github/workflows/ci_tests_run_notebooks.yml

@@ -53,6 +53,7 @@ jobs:
       run: python -m pip install --upgrade tox
 
     - name: Test with tox
+      run: cat ${GITHUB_EVENT_PATH}
       run: tox ${{ matrix.toxargs }} -e ${{ matrix.toxenv }} -- ${{ matrix.toxposargs }}