Cookoff25 website live PR (#495)

* website blog post

* Update cookoff2025-website.md

* Update cookoff2025-website.md

Author: jukent

portal/posts/cookoff2025-website.md

@@ -0,0 +1,13 @@
+---
+blogpost: true
+date: Feb 20, 2025
+author: Julia Kent
+tags: cook-off
+---
+
+# Save the date for the 2025 Cook-off hackathon!
+
+The 2025 Pythia Cookbook Cook-Off Hackathon will take place August
+5-8, at the NCAR Mesa Lab, located in Boulder, Colorado.
+
+[The website for the event is live](https://projectpythia.org/pythia-cookoff-2025/). Registration is not open at this time.