Nightly n8n backup to Google Drive

## Description
This template creates a nightly backup of all n8n workflows and saves them to a GitHub folder. Each night, the previous night's backups are moved to an “n8n_old” folder and renamed with the corresponding date.

Backups older than a specified age are automatically deleted (this feature is active for 30 days, you can remove it if you don't want the backups to be deleted).

## Prerequisites

- Google Drive account and credentials **Get** from the following link. [Link](https://console.cloud.google.com/apis/credentials/oauthclient/)
- n8n version 1.67.1 or higher
- N8n api key **Guide** from the following link. [Link](https://witmovil.com/where-to-create-the-api-key-in-n8n/)
- A destination folder for backups:
“n8n_old”
“n8n_backups”
(if it doesn't exist, create it)

## Configuration
Update all Google Drive nodes with your credentials.
Edit the Schedule Trigger node with the desired time to run the backup.
If you want to automatically purge old backups.

Edit the “PURGE DAYS” node to specify the age of the backups you want to delete.
Enable the “PURGE DAYS” node and the 3 subsequent nodes.
Enable the workflow to run on the specified schedule.