I believe you are the third or fourth Mac BOOTCAMP User asking for a newer Bootcamp driver then 20.x.xx which is the latest on AMD Download page.
I like to refer Bootcamp Users to this UNOFFICIAL BOOTCAMP DRIVER website where the Author modifies the latest AMD Driver to work in a Boot Camp environment on a Mac PC: https://www.bootcampdrivers.com/
Not sure if the latest is compatible with your GPU card or not. Need to read the Release Notes and what it mentions on the website itself to find out.
NOTE: If the above Bootcamp driver doesn't work then you will need to wait for AMD to release an updated Bootcamp driver to download or see if Apple Support has a newer version to download.