kernel-firmware-iwlwifi from home:tiwai:leap-15.6:update project
Select Your Operating System
Add repository and install manually
For standard run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:tiwai:leap-15.6:update/standard/home:tiwai:leap-15.6:update.repo zypper refresh zypper install kernel-firmware-iwlwifi