Update action.yml

Author: mcbarton

.github/actions/Emscripten-Notebook-Tests/action.yml

@@ -47,7 +47,7 @@ runs:
         # This sleep is to force enough time for the jupyter site to build before trying
         # to run notebooks in it. If you try to run the notebooks before the website is
         # ready the ci python script will crash saying ti cannot access the url
-        sleep 10
+        sleep 20
         echo "Running xeus-cpp in Jupter Lite in Chrome"
         python -u scripts/automated-notebook-run-script.py --driver chrome --notebook ${{ inputs.notebook }} --kernel ${{ inputs.kernel }} $INPUT_TEXT
         nbdiff notebooks/${{ inputs.notebook }} $HOME/Downloads/${{ inputs.notebook }} --ignore-id --ignore-metadata >> chrome_diff.txt