update zfs submodule to 2.2.3 and refresh patches

mostly support for newer kernel-versions, and fixes for the BRT bugs
discovered with 2.2.0 (BRT remains disabled by default).

The update contains a fix for CVE-2020-24370 in lua (which is present
in ZFS for channel-programs, which we do not use) - see:
openzfs/zfs#15847 for more details.

One patch from Stefan Lendl was backported and is now in the ZFS 2.2
branch.

Signed-off-by: Stoiko Ivanov <s.ivanov@proxmox.com>

debian/patches/0005-Enable-zed-emails.patch

@@ -13,7 +13,7 @@ Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
  1 file changed, 1 insertion(+), 1 deletion(-)
 
 diff --git a/cmd/zed/zed.d/zed.rc b/cmd/zed/zed.d/zed.rc
-index 78dc1afc7..41d5539ea 100644
+index bc269b155..e6d4b1703 100644
 --- a/cmd/zed/zed.d/zed.rc
 +++ b/cmd/zed/zed.d/zed.rc
 @@ -41,7 +41,7 @@ ZED_EMAIL_ADDR="root"

debian/patches/0011-zpool-status-tighten-bounds-for-noalloc-stat-availab.patch

@@ -51,10 +51,10 @@ Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
  1 file changed, 2 insertions(+), 1 deletion(-)
 
 diff --git a/cmd/zpool/zpool_main.c b/cmd/zpool/zpool_main.c
-index 5507f9d3f..98970abfe 100644
+index 69bf9649a..fd42ce7c1 100644
 --- a/cmd/zpool/zpool_main.c
 +++ b/cmd/zpool/zpool_main.c
-@@ -2478,7 +2478,8 @@ print_status_config(zpool_handle_t *zhp, status_cbdata_t *cb, const char *name,
+@@ -2616,7 +2616,8 @@ print_status_config(zpool_handle_t *zhp, status_cbdata_t *cb, const char *name,
 
  	if (vs->vs_scan_removing != 0) {
  		(void) printf(gettext("  (removing)"));

debian/patches/series

@@ -9,4 +9,3 @@
 0009-arc-stat-summary-guard-access-to-l2arc-MFU-MRU-stats.patch
 0010-Fix-nfs_truncate_shares-without-etc-exports.d.patch
 0011-zpool-status-tighten-bounds-for-noalloc-stat-availab.patch
-0012-fix-mount-do-not-truncate-shares-not-zfs-mount.patch