Use signed commits

Author: ptrus

.github/workflows/update-prices.yml

@@ -27,14 +27,7 @@ jobs:
         run: node scripts/update-prices.js
 
       - name: Commit and push changes
-        run: |
-          git config --local user.email "github-actions[bot]@users.noreply.github.com"
-          git config --local user.name "github-actions[bot]"
-
-          if git diff --quiet; then
-            echo "No changes to commit"
-          else
-            git add src/prices/rose-usd.json
-            git commit -m "chore: update ROSE/USD prices"
-            git push
-          fi
+        uses: stefanzweifel/git-auto-commit-action@v7
+        with:
+          commit_message: "chore: update ROSE/USD prices"
+          file_pattern: src/prices/rose-usd.json