Undo CI bypass

Author: chusitoo

.github/workflows/bench.yml

@@ -42,7 +42,7 @@ jobs:
         fail-on-alert: true
         github-token: ${{ secrets.GITHUB_TOKEN }}
         comment-on-alert: true
-        alert-threshold: 250%
+        alert-threshold: 150%
         gh-pages-branch: gh-pages
         benchmark-data-dir-path: benchmarks/${{matrix.compiler}}
         auto-push: true