trigger nightly

Author: wuchong

.github/workflows/nightly.yaml

@@ -17,9 +17,9 @@
 ################################################################################
 name: Nightly
 on:
-  schedule:
-    # Run at 20:00 UTC daily which is the lowest traffic time for Fluss project.
-    - cron: "0 20 * * *"
+  push:
+    branches:
+      - ci-**
 
 concurrency:
   group: ${{ github.workflow }}-${{ github.event_name }}-${{ github.event.number || github.run_id }}