🔧 Chore: Add Renovate bot

[BDVGitHub]

Add Renovate to auto generate PR's when dependencies updates are available.
This once a week and a max of 2 PR's per hour.

https://docs.renovatebot.com/

[BDVGitHub]

@cocotime or @mavalroot the PR is ready to be reviewed.
The goal is to use renovate to automatically search for dependency updates once a week.
For now its sunday @ 20:12 UTC time, this can be adjusted to e.g. different day and/or period if needed.

The only thing that needs to happen is configure RENOVATE_TOKEN but I can't do this (permission rights)
See https://github.com/marketplace/actions/renovate-bot-github-action#token for more info about the token.
Steps to follow, generate Personal access tokens (classic) https://github.com/settings/tokens and select repo:public_repo or repo. In this repo go to settings > Secrets and variables > actions > Repository secrets > create RENOVATE_TOKEN and paste the Personal acces token secret.

See https://github.com/renovatebot/github-action?tab=readme-ov-file#example for more info about renovate config

Instead of using a Personal acces token you can also use https://github.com/renovatebot/github-action?tab=readme-ov-file#example-with-github-app or see https://docs.renovatebot.com/modules/platform/github/