chore: re-enable zfs pkg

Enabled in #905, but I failed to re-kres.

Signed-off-by: Andrey Smirnov <andrey.smirnov@siderolabs.com>

Makefile

@@ -1,6 +1,6 @@
 # THIS FILE WAS AUTOMATICALLY GENERATED, PLEASE DO NOT EDIT.
 #
-# Generated on 2024-01-24T18:38:05Z by kres latest.
+# Generated on 2024-02-28T18:54:55Z by kres latest.
 
 # common variables
 
@@ -83,6 +83,7 @@ TARGETS += xfsprogs
 TARGETS += kernel
 TARGETS += gasket-driver-pkg
 TARGETS += nvidia-open-gpu-kernel-modules-pkg
+TARGETS += zfs-pkg
 NONFREE_TARGETS = nonfree-kmod-nvidia-pkg
 
 # help menu