Test site snapshot against core main

Author: MaxGhenis

.github/workflows/site-snapshot.yml

@@ -26,7 +26,7 @@ jobs:
         uses: actions/checkout@v4
         with:
           repository: CosilicoAI/microplex
-          ref: 71f270edecac3ef748411deb3beb77109c56a721
+          ref: main
           path: microplex
 
       - name: Set up Python