Use latest linux on quasar for controller support

linux/quasar/zfs.nix

@@ -1,12 +1,14 @@
 {
   config,
   lib,
+  pkgs,
   ...
 }: {
   boot = {
     loader.grub.zfsSupport = true;
     zfs = {
       extraPools = ["zarchive"];
+      package = pkgs.zfs_unstable;
       requestEncryptionCredentials = ["zactive/main"];
     };
   };