Hi @Nargiza_Kurbanova - Happy to help!
While we don’t have a step to do this, we do have a snippet that would allow you to create new headers in this post here.
Once you’ve created those new headers, you can remove the extra rows (which would include the old header row) by using a Limit rows step to remove the first 2 rows.
I hope that helps but let me know if you have any questions!