PHP upgrade on GCP

I'm running litespeed open source server on google cloud platform. The PHP is out-dated. Is there a guide on how to upgrade PHP on this version of open litespeed?

Thank you.
Sorry for the delayed response. I tried updating the package, but still get the same error message. Any other ideas?

Thank you.
Sure, but when I go to that link it says "This link is no longer active. To join this workspace, you’ll need to ask the person who originally invited you for a new link."