Update validate-hacs.yml

change schedule to weekly

Author: AJediIAm

.github/workflows/validate-hacs.yml

@@ -6,7 +6,7 @@ on:
       - main
   pull_request:
   schedule:
-    - cron: "0 0 * * *"
+    - cron: "0 0 * * 0"
   workflow_dispatch:
 
 jobs: