Add some related talks (#108)

_posts/2022-11-20-jump_dev_2023.md

@@ -62,6 +62,8 @@ JuMP-dev program, are related to JuMP and that you might find interesting.
 | Using Julia to Optimise Trajectories for Robots with Legs | Henrique Ferrolho  | [video](https://www.youtube.com/watch?v=5uF3VqgjiVE) |
 | What's New with Progradio.jl - Projected Gradient Optimization | Jad Wehbeh    | [video](https://www.youtube.com/watch?v=EZ2kq0Obaio) |
 | Interesso.jl                                              | Eduardo Vila       | [video](https://www.youtube.com/watch?v=clPR5DK4HNA) |
+| Polyhedral Computation                                    | Benoît Legat       | [video](https://www.youtube.com/watch?v=YuxJtvgg6uc) |
+| So You Think You Know How to Take Derivatives?            | Steven Johnson     | [video](https://www.youtube.com/watch?v=-l7JHalBubw) |
 
 ## How do I attend?