FileSyncer.yml: Move to out of office hour schedule

File sync can cause a large impact on CI resources. This change moves
the trigger to a schedule outside office hours (1AM Pacific Time /
9AM UTC daily) to reduce resource usage during most active periods
of other development.

Signed-off-by: Michael Kubacki <michael.kubacki@microsoft.com>

Author: makubacki

.github/workflows/FileSyncer.yml

@@ -10,12 +10,10 @@
 name: Sync Mu DevOps Files to Mu Repos
 
 on:
-  push:
-    branches:
-      - main
-    paths:
-      - '.github/workflows/FileSyncer.yml'
-      - '.sync/**'
+  schedule:
+    # * is a special character in YAML so you have to quote this string
+    # Run daily at 9am UTC - https://crontab.guru/#0_9_*_*_*
+    - cron: '0 9 * * *'
   workflow_dispatch:
 
 jobs: