Update to use node 20

[dampcake]

Node 16 is now deprecated by github, meaning builds using this action are getting warnings about using node 16. Please can it be updated to node 20.

https://github.blog/changelog/2023-09-22-github-actions-transitioning-from-node-16-to-node-20/

[jozefizso]

The change is already implemented in the main branch and it waiting for release as part of the 1.8.0

You must reference the action either my main branch or using the commit hash:

dorny/test-reporter@main
dorny/test-reporter@86a20101473378575dcbaa709a4f2b772001fbbb

[jozefizso]

Duplicate of #315