Add daily schedule trigger to SDK E2E tests workflow

Co-authored-by: brunoborges <129743+brunoborges@users.noreply.github.com>

Author: Copilot

.github/workflows/sdk-build.yml

@@ -4,6 +4,9 @@ env:
   COPILOT_GITHUB_TOKEN: ${{ secrets.COPILOT_GITHUB_TOKEN }}
 
 on:
+  schedule:
+    # Run once a day at 00:00 UTC
+    - cron: '0 0 * * *'
   push:
     branches: [main]
   pull_request: