ci: trigger deploy-site workflow on optimuspy2dot0 pushes

Lets the v2 work-in-progress preview on GitHub Pages without first
merging to master. Comment in the file explains the branch can be
removed from the trigger list once the v2 merge lands.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: nicolasbisurgi

.github/workflows/deploy-site.yml

@@ -7,7 +7,10 @@ name: Deploy Website
 
 on:
   push:
-    branches: [master, main]
+    # `optimuspy2dot0` is included so the v2 work-in-progress can be previewed
+    # on GitHub Pages before being merged to master. Remove it after the v2
+    # merge if you don't want every push to that branch to redeploy.
+    branches: [master, main, optimuspy2dot0]
     paths:
       - 'site/**'
       - 'docs/**'