Back up self-hosted workflows to Google Drive daily with change detection

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This workflow creates a daily, automated backup of all workflows in a self-hosted n8n instance and stores them in Google Drive. Instead of exporting every workflow on every run, it uses content hashing to detect meaningful changes and only updates backups when a workflow has actually been modified. To keep Google Drive clean and predictable, the workflow intentionally deletes the existing backup file before uploading the updated version. This avoids duplicate files and ensures there is always o