update submodule to zfs-2.0.2

Signed-off-by: Stoiko Ivanov <s.ivanov@proxmox.com>
Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>

diff --git a/upstream b/upstream
index 32a78e579dd3395e122a451848cf88089f6b18ae..d022406a1499279167362f9c36280e1f847204e2 160000 (submodule)
--- a/upstream
+++ b/upstream
@@ -1 +1 @@
-Subproject commit 32a78e579dd3395e122a451848cf88089f6b18ae
+Subproject commit d022406a1499279167362f9c36280e1f847204e2