ubus: update to version 2019-12-27

Fixes socket descriptor passing and bumps ABI_VERSION to 20191227.

Ref: http://lists.infradead.org/pipermail/openwrt-devel/2019-December/020840.html
Signed-off-by: Petr Štetiar <ynezz@true.cz>

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:=2019-12-19
-PKG_SOURCE_VERSION:=a1523d76b016ed46501f61e38ad38999d6c66f52
-PKG_MIRROR_HASH:=f0d46cac85d60e24e3f835c729ee17bb29f0e75c8bd831a86fb3456debd9ad62
+PKG_SOURCE_DATE:=2019-12-27
+PKG_SOURCE_VERSION:=041c9d1c052bb4936fd03240f7d0dd64aedda972
+PKG_MIRROR_HASH:=7febbe78dd178d8d7ccacff54c00fb2d19a53624005920db8cd85236f54f8324
 CMAKE_INSTALL:=1
 
 PKG_LICENSE:=LGPL-2.1
@@ -36,7 +36,7 @@ define Package/libubus
   SECTION:=libs
   CATEGORY:=Libraries
   DEPENDS:=+libubox
-  ABI_VERSION:=20191219
+  ABI_VERSION:=20191227
   TITLE:=OpenWrt RPC client library
 endef