Added support for build number in Github Actions

[rand0m86]

Context

Added support for determining the build number on Github Actions. Apparently it was not that easy task when the initial support was added.

Contributor Checklist

• Added relevant integration or unit tests to verify the changes
• Update the Readme or any other documentation (including relevant Javadoc)
• Ensured that tests pass locally: mvn clean package
• Ensured that the code meets the current checkstyle coding style definition: mvn clean verify -Pcheckstyle -Dmaven.test.skip=true -B

[rand0m86]

Thanks @TheSnoozer, it was quick 🙂.
Any expected day/month for the next release of the gradle plugin, by any chance?

[TheSnoozer]

Nothing concrete planned :-) Let me make a release once the tests pass :-)

[TheSnoozer]

Wow...I haven't done a release for quite some time now. I managed to release the git-commit-id-plugin-core part os version 6.0.0 now. I'll try to release the maven plugin with the relevant changes by the weekend.