Update the list of talks about Pythia

[brian-rose]

On the portal here there is a list of conference talks about Project Pythia with links to slides / videos. The last entries are AMS 2022, now more than a year old.

It would be good to update this with talks from the past year.

Alternatively, is there a better / more dynamic way to keep this list up to date? (I can't think of one).