change update versions workflow to a cron job

[lanzafame]

• remove pull request trigger
• set cron job to random time to avoid being dropped by github if midnight has too many scheduled jobs

[Copilot]

Pull Request Overview

Updates the “Update Lotus Version” GitHub Actions workflow to run on a scheduled cron job instead of on pull requests.

• Removed the pull_request trigger to stop automatic runs on new PRs
• Added a cron schedule to run every two days at 03:47 UTC
• Retained workflow_dispatch for manual runs

Comments suppressed due to low confidence (1)

.github/workflows/update-versions.yml:6

• Using */2 in the day-of-month field doesn’t guarantee exact 48-hour intervals across month boundaries (e.g., from Jan 31 → Feb 1). If you require strict 2-day spacing, consider an alternative schedule or a daily run with conditional logic.

    - cron: '47 3 */2 * *'