Add JuMP-dev 2024 talk

Author: blegat

README.md

@@ -34,6 +34,7 @@ for the in-development version of the documentation.
 Some presentations on, or using, SumOfSquares (see [blegat/SumOfSquaresSlides](https://github.com/blegat/SumOfSquaresSlides)
 for the source code of the presentations):
 
+  * Benoît Legat at [JuMP-dev 2024](https://jump.dev/meetings/jumpdev2024/) [[Slides](https://jump.dev/assets/jump-dev-workshops/2024/legat.html)] [[Video](https://youtu.be/CGPHaHxCG2w)]
   * Benoît Legat at [JuMP-dev 2023](https://pretalx.com/juliacon2023/talk/XLT8H3/) [[Slides](https://drive.google.com/file/d/1H-_Ot7tP2g7t95r0K_mTaXvGO1ChUPci/view?usp=drive_link)]
   * Benoît Legat at [SIAM DS 2023](https://www.siam.org/conferences/cm/conference/ds23) [[Slides](https://drive.google.com/file/d/18isl8aCr_mAsLg9v3eqe-t1BxEP4_TPE/view?usp=drive_link)]
   * Benoît Legat, Marek Kaluba and Tillmann Weisser at INFORMS 2022 [[Slides](https://drive.google.com/file/d/1rlsIxgcnKWT436k4MNenjHfgH0UYRLAB/view?usp=share_link)]