Split github action tests for FairOS/Node

[IgorShadurin]

Currently, the FairOS tests run only after the NodeJS tests have completed, and each of these tests take about 10 minutes to complete.
This setup leads to a total wait time of roughly 20 minutes, which can potentially be reduced if we could make these tests run in parallel rather than sequentially.
By leveraging the capability of GitHub Actions to run jobs concurrently, we could potentially halve the total time for the completion of the tests, thereby speeding up the development and integration workflow. This could particularly be beneficial in situations where multiple pull requests are being managed simultaneously.