Update to RT kernel: 5.6.17.9-1 and zfs: 2.1.1.

This version does still not compile due to license issues [0] yet
technically works.

[0] openzfs/zfs#11097

.SRCINFO

@@ -1,15 +1,15 @@
 pkgbase = zfs-linux-rt
-	pkgver = 0.8.4_5.6.17.9.1
+	pkgver = 2.1.1_5.15.2.19.realtime1.2
 	pkgrel = 1
 	url = https://zfsonlinux.org/
 	arch = x86_64
 	license = CDDL
-	makedepends = linux-rt-headers=5.6.17.9-1
+	makedepends = linux-rt-headers=5.15.2.19.realtime1-2
 	depends = kmod
-	depends = zfs-utils=0.8.4
-	depends = linux-rt=5.6.17.9-1
-	source = https://github.com/zfsonlinux/zfs/releases/download/zfs-0.8.4/zfs-0.8.4.tar.gz
-	sha256sums = 2b988f5777976f09d08083f6bebf6e67219c4c4c183c1f33033fb7e5e5eacafb
+	depends = zfs-utils=2.1.1
+	depends = linux-rt=5.15.2.19.realtime1-2
+	source = https://github.com/zfsonlinux/zfs/releases/download/zfs-2.1.1/zfs-2.1.1.tar.gz
+	sha256sums = bd4f48d009f3b5e291390bde62b0131b8bf3fab09f4fc0fa3591b1f2e7074cff
 
 pkgname = zfs-linux-rt
 	pkgdesc = Kernel modules for the Zettabyte File System.
@@ -34,4 +34,3 @@ pkgname = zfs-linux-rt-headers
 	conflicts = spl-dkms
 	conflicts = spl-dkms-git
 	conflicts = spl-headers
-

PKGBUILD

@@ -18,17 +18,17 @@
 #
 pkgbase="zfs-linux-rt"
 pkgname=("zfs-linux-rt" "zfs-linux-rt-headers")
-_zfsver="0.8.4"
-_kernelver="5.6.17.9-1"
-_extramodules="5.6.17-rt9-1-rt"
+_zfsver="2.1.1"
+_kernelver="5.15.2.19.realtime1-2"
+_extramodules="5.15.2.19.realtime1-2-rt"
 
 pkgver="${_zfsver}_$(echo ${_kernelver} | sed s/-/./g)"
 pkgrel=1
 makedepends=("linux-rt-headers=${_kernelver}")
 arch=("x86_64")
 url="https://zfsonlinux.org/"
 source=("https://github.com/zfsonlinux/zfs/releases/download/zfs-${_zfsver}/zfs-${_zfsver}.tar.gz")
-sha256sums=("2b988f5777976f09d08083f6bebf6e67219c4c4c183c1f33033fb7e5e5eacafb")
+sha256sums=('bd4f48d009f3b5e291390bde62b0131b8bf3fab09f4fc0fa3591b1f2e7074cff')
 license=("CDDL")
 depends=("kmod" "zfs-utils=${_zfsver}" "linux-rt=${_kernelver}")