Fix linking of "Closed" issues

[NotMyFault]

GitHub does no longer utilize the /find endpoint for linking issues. Keeping it up results in GitHub responding with a 404.

• 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
• Ensure you have provided tests - that demonstrates feature works or fixes the issue