Add support for Node 20 and use a matrix strategy to test the project with all the supported versions (18 & 20)

[javiertoledo]

Feature Request

Description

The project must at least support the main LTS node releases (Node 18 and 20), and it would be ideal that the project runs in the three major operating systems.

Possible Solution

We could use a matrix strategy to run the unit and integration tests in all combinations of node-OS scenarios to make sure everything runs smoothly.

Additional information

Check out the following PRs, it would be worth merging them before tackling this task:

• Upgrade for Node 18 compatibility #1431
• Integration branch for PR #1267 #1278 - Unit tests for windows