Update hassfest.yml

Only trigger weekly

Author: AJediIAm

.github/workflows/hassfest.yml

@@ -1,12 +1,8 @@
 name: Validate with hassfest
 
 on:
-  push:
-    branches:
-      - main
-  pull_request:
   schedule:
-    - cron: "0 0 * * *"
+    - cron: "0 0 * * 0"
   workflow_dispatch:
 
 jobs: