Add notifications for security updates

[anadahz]

Some ideas on how to do this:

• Add RSS release feeds of upstream git repositories or websites of the software we are using to #privacylx Matrix channel.
• Create an issue automatically when a new release or an upgrade is available.

[francisco-core]

• Create an issue automatically when a new release or an upgrade is available.

Better yet: create a pull request automatically, if possible. Like github's dependabot. In most of the cases it is just literally updating a version number in a file

[anadahz]

Better yet: create a pull request automatically, if possible. Like github's dependabot. In most of the cases it is just literally updating a version number in a file

Great! Adding the relevant documentation here:
https://help.github.com/en/github/managing-security-vulnerabilities/configuring-automated-security-updates