fix deprecated user_permission.can() call

[jneilliii]

https://github.com/OctoPrint/OctoPrint/blob/a93b4d397248dc406a75e634c1326fb1b8ddcb63/src/octoprint/server/__init__.py#L122C47-L125

[github-actions]

This issue has been automatically marked as stale because it has not had activity in 14 days. It will be closed if no further activity occurs in 7 days