only fail on errors and ignore warnings

.github/workflows/reproducibility-checker.yml

@@ -21,7 +21,7 @@ jobs:
 
     - name: Lint Jupyter Notebooks
       run: |
-        find ./book/chapters/ -type f -name '*.ipynb' -exec nbqa flake8 {} + > lint_logs.txt
+        find ./book/chapters/ -type f -name '*.ipynb' -exec nbqa flake8 --select=E,F --ignore=W {} + > lint_logs.txt
 
       # Fail the workflow if linting errors are found
       continue-on-error: true