CLOUDP-347212: Update release-IPA-metrics.yml to run once per week

Author: matt-condon

.github/workflows/release-IPA-metrics.yml

@@ -3,7 +3,7 @@
 name: IPA Validation Metrics Release
 on:
   schedule:
-    - cron: '0 11 * * *'  # Runs daily at 11:00 UTC (11 AM UTC)
+    - cron: '0 11 * * 0'  # Runs every Sunday at 11:00 UTC (11 AM UTC)
   workflow_dispatch:
 permissions:
   issues: write