ubus: update to Git HEAD (2023-11-28)

2b39a27d8bcc libubus: fix reconnect with auto subscribe
f84eb5998c6e libubus: fix initial subscribe with autosubscribe

Signed-off-by: Felix Fietkau <[email protected]>

package/system/ubus/Makefile

@@ -5,9 +5,9 @@ PKG_RELEASE:=1
 
 PKG_SOURCE_PROTO:=git
 PKG_SOURCE_URL=$(PROJECT_GIT)/project/ubus.git
-PKG_SOURCE_DATE:=2023-11-14
-PKG_SOURCE_VERSION:=b3e8c4ef07ebb6f0f34a5c1f0dc1539068363619
-PKG_MIRROR_HASH:=bb7296b17d5a59b9080d4c9ae188dee49f49c0ce88a5cbe0317102123583d663
+PKG_SOURCE_DATE:=2023-11-28
+PKG_SOURCE_VERSION:=f84eb5998c6ea2d34989ca2d3254e56c66139313
+PKG_MIRROR_HASH:=d0c15a0275fa3d35accddb84611700bf601745ad68462bc18905bb65da931f21
 PKG_ABI_VERSION:=$(call abi_version_str,$(PKG_SOURCE_DATE))
 CMAKE_INSTALL:=1