ubus: update to the latest version

b743a331421d ubusd: log ACL init errors
2099bb3ad997 libubus: use list_empty/list_first_entry in ubus_process_pending_msg
ef038488edc3 libubus: process pending messages in data handler if stack depth is 0
a72457b61df0 libubus: increase stack depth for processing obj msgs

Signed-off-by: Felix Fietkau <nbd@nbd.name>

package/system/ubus/Makefile

@@ -5,9 +5,9 @@ PKG_RELEASE:=2
 
 PKG_SOURCE_PROTO:=git
 PKG_SOURCE_URL=$(PROJECT_GIT)/project/ubus.git
-PKG_SOURCE_DATE:=2021-06-30
-PKG_SOURCE_VERSION:=4fc532c8a55ba8217ad67d7fd47c5eb9a8aba044
-PKG_MIRROR_HASH:=a5c8205f2e2b2f1f9ad687592e66a6e2bf8900dc54cfe3ceefe6c297d18971a8
+PKG_SOURCE_DATE:=2021-08-09
+PKG_SOURCE_VERSION:=a72457b61df045d3c499a6211362b751710590d7
+PKG_MIRROR_HASH:=ac617577bcb2ff3dbc3039ad67200afcce910840223a2de15977d3224e6557fd
 PKG_ABI_VERSION:=$(call abi_version_str,$(PKG_SOURCE_DATE))
 CMAKE_INSTALL:=1