libubox: bump to version 2019-10-29

It contains a single change to vlist.h header file: "vlist: add more
macros for loop iteration".  This is needed for newer version of fstools

Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com>

package/libs/libubox/Makefile

@@ -5,9 +5,9 @@ PKG_RELEASE=1
 
 PKG_SOURCE_PROTO:=git
 PKG_SOURCE_URL=$(PROJECT_GIT)/project/libubox.git
-PKG_SOURCE_DATE:=2019-10-21
-PKG_SOURCE_VERSION:=eb30a03048f83e733a9530b5741808d7d0932ff2
-PKG_MIRROR_HASH:=04c0edc0df8c9336ca3d68d3e3536de42805837c72ceb5fb4ecaab87a59ff2cd
+PKG_MIRROR_HASH:=58f6f6b21a00b69d466bcbce31e8adbef364d139715731430194746be5211840
+PKG_SOURCE_DATE:=2019-10-29
+PKG_SOURCE_VERSION:=301303911dded723b7eda4d6a4a933b22d2c1b60
 CMAKE_INSTALL:=1
 
 PKG_LICENSE:=ISC