A deprecated method was being used which prevented usage of a GitHub app that is installed in multiple orgs but the credential does not specify an owner (i.e. configured to infer the org to use from the repo). This uses the new method so that the inference can be done correctly.

Testing done

I installed this manually on a Jenkins server that is exhibiting the problem and then ensured that it worked with the change.

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