package/rtl8821au: bump to version 2024-04-08 branch v5.2.6

This version allows to build up to Linux version 6.9

Fixes: http://autobuild.buildroot.net/results/3b451b427a8dbe39ed275f91e38e76c2cae9a43a
Signed-off-by: Giulio Benetti <giulio.benetti@benettiengineering.com>
Signed-off-by: Arnout Vandecappelle <arnout@mind.be>

package/rtl8821au/rtl8821au.hash

@@ -1,3 +1,3 @@
 # Locally calculated
-sha256  9dfb2b12c52fe759e4978cbd7a0fb90f0605ae9146a6d0186f2869bbfb6d13fd  rtl8821au-0cab870ff635ba038705ab29363b0cbbedd5c258.tar.gz
+sha256  fde8ca9735a6c9c4c907fb6f565185a59b04bcfa78feb2309941cc09d49c4ac7  rtl8821au-8ea0ed9da764448c7310a27744ab5814289f35a8.tar.gz
 sha256  640d90f6ee401241ff62834d0d1b33f83049e99b8bfdfa04ed1b0a1635dde3e7  LICENSE

package/rtl8821au/rtl8821au.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-RTL8821AU_VERSION = 0cab870ff635ba038705ab29363b0cbbedd5c258
+RTL8821AU_VERSION = 8ea0ed9da764448c7310a27744ab5814289f35a8
 RTL8821AU_SITE = $(call github,lwfinger,rtl8812au,$(RTL8821AU_VERSION))
 RTL8821AU_LICENSE = GPL-2.0
 RTL8821AU_LICENSE_FILES = LICENSE