chore: Github action should only run once per day (#1312)

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Fixes #1311  🦕
diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index f99a0b4..cc6e6cb 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -19,7 +19,7 @@
   schedule:
     # * is a special character in YAML so you have to quote this string
     # Run this Github Action every day at 7 AM UTC
-    - cron:  '* 7 * * *'
+    - cron:  '0 7 * * *'
 
 jobs:
   build: