Initial GitHub Action workflow for testing code on multiple JDK versions

[geertjanw]

• Ready for review
• Follows CONTRIBUTING rules
• Reviewed by Snyk internal team

What does this PR do?

Initial GitHub Action workflow for testing code on multiple JDK versions.

Where should the reviewer start?

By using the action on GitHub to see that testing succeeds.

How should this be manually tested?

On-line on GitHub.

Any background context you want to provide?

This is useful for on-line automated testing on a variety of JDK versions.

What are the relevant tickets?

Screenshots

Additional questions

[recena]

According to the documentation is recommended to use mvn -B --file pom.xml test I suggest you mvn -B -f pom.xml verify

[geertjanw]

Done, below.

[CLAassistant]

Thank you for your submission! We really appreciate it. Like many open source projects, we ask that you sign our Contributor License Agreement before we can accept your contribution.
_{You have signed the CLA already but the status is still pending? Let us recheck it.}