Cardano node compatibility in GitHub release notes

[jpraynaud]

Why

We want to add a section in the GitHub release notes that details the compatibility of the Mithril nodes with the Cardano node. This is a feature which has been requested by some SPO.

What

Add a section about Cardano node compatibility in the GitHub release notes.

Here is the expected output:

Cardano Node Compatibility

Network	Mithril Aggregator	Mithril Signer
release-mainnet	Cardano 10.4.1+(*)	Cardano 10.4.1+(*)
release-preprod	Cardano 10.4.1+(*)	Cardano 10.4.1+(*)
pre-release-preview	Cardano 10.4.1+(*)	Cardano 10.4.1+(*)
testing-preview	Cardano 10.4.1+(*)	Cardano 10.4.1+(*)

^*: Up to the latest Cardano node version released at the time of this release.

How

• Create a script to generate a table of compatible Cardano node versions from the networks.json file
• Update the release notes for GitHub release with Cardano node compatibility