Taking advantage of GitHub Actions to test SCAP content

[Gabriel Gaspar Becker]

Hello all, there is a new integration of SSGTS with GitHub Actions that is
able to test pull requests changes and can help to speed up the review
process.

Please have a look at the integration blog post:
https://complianceascode.github.io/template/2021/08/27/integrating-ssgts-int...

Regards.