Update main.yml

Author: mcbarton

.github/workflows/main.yml

@@ -360,9 +360,11 @@ jobs:
           nbdiff notebooks/smallpt.ipynb $HOME/Downloads/smallpt.ipynb
           rm $HOME/Downloads/smallpt.ipynb          
           if [[ "${{ matrix.os }}" == "macos"* ]]; then
+            defaults write com.apple.Safari AskBeforeDownloading -bool false
             python scripts/automated-notebook-run-script.py --driver safari
             find $HOME -name "*smallpt*"
             nbdiff notebooks/smallpt.ipynb $HOME/Downloads/smallpt.ipynb
+            rm $HOME/Downloads/smallpt.ipynb
           fi
         timeout-minutes: 25