Change sponsors readme schedule

Author: jaydrogers

.github/workflows/scheduled-task_update-sponsors.yml

@@ -3,7 +3,7 @@ name: Generate Sponsors README
 'on':
   workflow_dispatch:
   schedule:
-    - cron: 30 15 * * 0-6
+    - cron: 0 12 * * 1
 jobs:
   deploy:
     runs-on: ubuntu-latest