hosts (pulse-14): Use latest Kernel

Looks like a bug was introduced in Kernel 6.1.91 that isn't fixed on
6.6.32 which ships with NixOS 24.05 by default. The result of the bug
is that pulse-14 won't power off completely. Instead it will hang
indefinetely with the keyboard backlight and fans still being on.
This happens no matter if it is restarted, shutdown or send to
hibernate.

hosts/pulse-14/configuration.nix

@@ -28,6 +28,10 @@
     };
   };
 
+  # Use latest Kernel to work around a problem with the device not
+  # powering off since Kernel v6.1.91
+  boot.kernelPackages = pkgs.linuxPackages_latest;
+
   services.printing.enable = true;
 
   services.xserver.videoDrivers = ["amdgpu"];