Add Fonterra sponsorship of JuMP-dev 2025

Author: odow

_posts/2024-09-26-jump_dev_2025.md

@@ -156,8 +156,8 @@ To contact the program committee, write to `[email protected]`.
 
 <a href="https://opensource.google" style="background-image:none;"><img style="height:70px;margin:35px" src="/assets/jump-dev-workshops/2024/logo_Google_FullColor_hdpi_830x271px.png" alt="Google logo"></a>
 
+<a href="https://fonterra.com" style="background-image:none;"><img style="height:70px;margin:35px" src="/assets/jump-dev-workshops/2025/fonterra-logo.webp" alt="Fonterra logo"></a>
 <a href="https://orsnz.org.nz" style="background-image:none;"><img style="height:70px;margin:35px" src="/assets/jump-dev-workshops/2025/orsnz.png" alt="ORSNZ logo"></a>
 <a href="https://gridakl.com" style="background-image:none;"><img style="height:70px;margin:35px" src="/assets/jump-dev-workshops/2025/grid-akl-logo.svg" alt="GridAKL logo"></a>
 <a href="https://opensolver.org" style="background-image:none;"><img style="height:70px;margin:35px" src="/assets/jump-dev-workshops/2025/opensolver-logo.png" alt="OpenSolver logo"></a>
-
 <a href="https://des.auckland.ac.nz/en.html" style="background-image:none;"><img style="height:70px;margin:35px" src="/assets/jump-dev-workshops/2025/des-logo.png" alt="DES logo"></a>