Test JGit 7.3.0 with git client plugin file leak workaround

Part of:

• Use JGit 7.3.0 git-client-plugin#1262

Testing done

Confirmed with interactive testing that the file leak is resolved by the wide application of the workaround in JGit API implementation.

• Use JGit 7.3.0 git-client-plugin#1262 (comment)

Confirmed with automated testing that the file leak detected in Windows PushTest is resolve by the workaround.

• https://github.com/jenkinsci/git-client-plugin/pull/1262/checks?check_run_id=44103079706

Ran the following tests in my local copy of the BOM repository:

LINE=2.492.x PLUGINS=git,workflow-basic-steps,git-parameter,pipeline-groovy-lib,docker-workflow TEST=InjectedTest bash local-test.sh
LINE=weekly  PLUGINS=git,workflow-basic-steps,git-parameter,pipeline-groovy-lib,docker-workflow TEST=InjectedTest bash local-test.sh

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 demonstrate the feature works or the issue is fixed