Test JGit 7.2, Git Client 6.2, and Mina SSHD 2.15.0

[MarkEWaite]

Test JGit 7.2, Git Client 6.2, and Mina SSHD 2.15.0

Git client plugin incremental build from:

• Use JGit 7.2.0 git-client-plugin#1262

Mina SSHD incremental build from:

• Use Apache Mina SSHD 2.15.0 mina-sshd-api-plugin#150

Testing done

Automated tests pass on Linux with Java 21. Rely on ci.jenkins.io to test Windows with Java 17.

Test plan from:

• Use JGit 7.2.0 git-client-plugin#1262 (comment)

Submitter checklist

• Make sure you are opening from a topic/feature/bugfix branch (right side) and not your main branch!
• Ensure that the pull request title represents the desired changelog entry
• Please describe what you did
• Link to relevant issues in GitHub or Jira
• Link to relevant pull requests, esp. upstream and downstream changes
• Ensure you have provided tests - that demonstrates feature works or fixes the issue