fix: add signoff to workflow commit

Signed-off-by: Maanvi Chetwani <maanvichetwani21@gmail.com>

Author: Maanvi212006

.github/workflows/update-leaderboard.yml

@@ -23,7 +23,7 @@ jobs:
       - name: Commit and push JSON
         run: |
           git config user.name "github-actions"
-          git config user.email "actions@github.com"
-          git add _data/leaderboard.json
-          git commit -m "chore: update leaderboard data" || echo "No changes to commit"
-          git push
+        git config user.email "actions@github.com"
+        git add _data/leaderboard.json
+        git commit -m "chore: update leaderboard data" -s || echo "No changes to commit"
+        git push