JWT Depricated by Zoom, support ends 6/1/2023

[jwade42]

As noted on https://marketplace.zoom.us/docs/guides/build/jwt-app/ Zoom is ending support for JWT on 6/1/2023 and requiring users to switch to Serve to Server OAuth: https://marketplace.zoom.us/docs/guides/build/server-to-server-oauth-app/

This app will need to be updated before that date or it will cease to function.

If I have a change to implement this, I will submit.