update zfs submodule to 2.2.4 and refresh patches

mostly - drop all patches we had queued up to get kernel 6.8
supported.

Signed-off-by: Stoiko Ivanov <s.ivanov@proxmox.com>
Tested-by: Max Carrara <m.carrara@proxmox.com>
Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>

debian/patches/series

@@ -9,17 +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-udev-correctly-handle-partition-16-and-later.patch
-0013-Linux-6.8-compat-use-splice_copy_file_range-for-fall.patch
-0014-linux-5.4-compat-page_size.patch
-0015-abd-add-page-iterator.patch
-0016-vdev_disk-rename-existing-functions-to-vdev_classic_.patch
-0017-vdev_disk-reorganise-vdev_disk_io_start.patch
-0018-vdev_disk-make-read-write-IO-function-configurable.patch
-0019-vdev_disk-rewrite-BIO-filling-machinery-to-avoid-spl.patch
-0020-vdev_disk-add-module-parameter-to-select-BIO-submiss.patch
-0021-vdev_disk-use-bio_chain-to-submit-multiple-BIOs.patch
-0022-abd_iter_page-don-t-use-compound-heads-on-Linux-4.5.patch
-0023-vdev_disk-default-to-classic-submission-for-2.2.x.patch
-0024-Fix-corruption-caused-by-mmap-flushing-problems.patch
-0025-vdev_disk-don-t-touch-vbio-after-its-handed-off-to-t.patch