Use of deprecated and dropped function in node 12.15.0

[ascheucher]

It's not running on node 12.15.0 anymore. Uses a deprecated and dropped function:

` C:\Users\andi.MFG\AppData\Roaming\nvm\v12.15.0\node_modules\file-dedupe\bin\findup:184
process.stderr.clearLine();
^

TypeError: process.stderr.clearLine is not a function
at run (C:\Users\andi.MFG\AppData\Roaming\nvm\v12.15.0\node_modules\file-dedupe\bin\findup:184:18)
at Socket. (C:\Users\andi.MFG\AppData\Roaming\nvm\v12.15.0\node_modules\file-dedupe\bin\findup:117:5)
at Object.onceWrapper (events.js:312:28)
at Socket.emit (events.js:228:7)
at endReadableNT (_stream_readable.js:1185:12)
at processTicksAndRejections (internal/process/task_queues.js:81:21)`

Running on Windows 10 with nvm-windows:
Running version 1.1.7.