prod(zero-cache): reenable prod deploys (#3507)

Author: darkgnotic

.github/workflows/cf-prod-deploy.yml

@@ -2,7 +2,7 @@ name: Build and Deploy Zero-Cache AWS CF
 
 on:
   push:
-    branches: [disabled] # TODO: change back to [main] after vetting on sandbox
+    branches: [main]
     # paths:
     #   - 'packages/zero-cache/**'
 env: