workflow: change cron time

.gitea/workflows/update-flake.yaml

@@ -2,7 +2,7 @@ name: Update Nix Flake
 
 on:
   schedule:
-    - cron: "30 0 * * *" # daily run
+    - cron: "45 0 * * *" # daily run
   workflow_dispatch: {}
 
 jobs:
@@ -50,9 +50,8 @@ jobs:
         shell: bash
         run: |
           git add flake.lock
-          if git diff --quiet; then
-            echo "No changes to commit."
-          else
-            git commit -m "Update flake.lock $(date -I)"
-            git push origin flake-updates
-          fi
+          git status
+          git diff --cached --quiet && echo "No changes to commit." && exit 0
+
+          git commit -m "Update flake.lock $(date -I)"
+          git push origin flake-updates