Nitrux 2.2.1 ships with Default 5.18.6 XanMod kernel

With this release, Nitrux 2.2.1 ships with the default 5.18.6 XanMod kernel, which is the successor to 5.17.12, which was not implemented with the previous release 2.2.0 due to the failure of the package broadcom-sta-dkm while building, but with this release, you can have the stable version of the 5.18.6 XanMod kernel.