ci: update commit messages to follow Conventional Commits via GitHub Actions

Author: shimomo

.github/workflows/cron.yml

@@ -46,7 +46,7 @@ jobs:
           FILES=$(git ls-files --modified --others --exclude-standard docs/v2/*.json || true)
           if [ -n "$FILES" ]; then
             git add $FILES
-            git commit -m "chore: Deploy JSON file to docs/v2 [skip ci]" || exit 0
+            git commit -m "chore: deploy JSON file to docs/v2 [skip ci]" || exit 0
             git pull --rebase --autostash
             git push origin HEAD
           else