package/rtl8821au: fix build failure with Linux 6.15

Benetti Engineering just took over Larry Finger(lwfinger)'s repository [0]
rtl8821au since Larry unfortunately passed away[1](RIP) and there are
pending PRs that will never be checked as stated here. So basically move
github user to benetti-engineering-sas and update version with latest that
fixes build failure with Linux version 6.15. And of course let's update
package's URL due to the moving.

[0]: https://github.com/lwfinger/rtl8812au/issues/32
[1]: https://lwn.net/Articles/979419/

Fixes:
still not occured.

Signed-off-by: Giulio Benetti <giulio.benetti@benettiengineering.com>
Signed-off-by: Julien Olivain <ju.o@free.fr>

package/rtl8821au/Config.in

@@ -9,4 +9,4 @@ config BR2_PACKAGE_RTL8821AU
 	help
 	  rtl8821au wifi driver
 
-	  https://github.com/abperiasamy/rtl8812AU_8821AU_linux
+	  https://github.com/benetti-engineering-sas/rtl8821au

package/rtl8821au/rtl8821au.hash

@@ -1,3 +1,3 @@
 # Locally calculated
-sha256  fde8ca9735a6c9c4c907fb6f565185a59b04bcfa78feb2309941cc09d49c4ac7  rtl8821au-8ea0ed9da764448c7310a27744ab5814289f35a8.tar.gz
+sha256  fd02814e2ab5435cf4213aaf876d28dedccc0bec8c91ed768336727276c5eae6  rtl8821au-d0a49ba401a8661ef0cdc4cf8850bc7c927a062c.tar.gz
 sha256  640d90f6ee401241ff62834d0d1b33f83049e99b8bfdfa04ed1b0a1635dde3e7  LICENSE

package/rtl8821au/rtl8821au.mk

@@ -4,8 +4,8 @@
 #
 ################################################################################
 
-RTL8821AU_VERSION = 8ea0ed9da764448c7310a27744ab5814289f35a8
-RTL8821AU_SITE = $(call github,lwfinger,rtl8812au,$(RTL8821AU_VERSION))
+RTL8821AU_VERSION = d0a49ba401a8661ef0cdc4cf8850bc7c927a062c
+RTL8821AU_SITE = $(call github,benetti-engineering-sas,rtl8821au,$(RTL8821AU_VERSION))
 RTL8821AU_LICENSE = GPL-2.0
 RTL8821AU_LICENSE_FILES = LICENSE