Make course explorer python script run on Github Actions

[brianrahadi]

Right now, the way we generate data is from a manual Python script run.

we can use GitHub Actions to make the process more automated and ensure up-to-date course information.
Maybe this info will help: https://www.linkedin.com/pulse/learn-how-run-python-scripts-github-actions-10-minutes-mehran-mousavi-luzre/

Currently, though, it takes about 3 mins even on the local machine to run the script. If we see that this may take too long, we can just run on separate GitHub actions deployment that runs separately triggered weekly.

This also needs to update the Last updated date info that is in the courses.tsx page