package/libubox: bump version to d716ac4

Changelog:

  - a0dbcf8 tests: add blob-buffer overflow test
  - b36a3a9 blob: fix exceeding maximum buffer length
  - b8abed7 utils.h: add fallthrough macro
  - b14c468 json_script: fix unannotated fall-through warning
  - d716ac4 list.h: add a few missing iterator macros

Signed-off-by: Peter Seiderer <ps.report@gmx.net>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/libubox/libubox.hash

@@ -1,2 +1,2 @@
 # Locally calculated
-sha256  c6bac8baa7525b2d35eb22edeb5722c098370794d00e8859ef1a0bdfd8716151  libubox-551d75b5662cccd0466b990d58136bdf799a804d-br1.tar.gz
+sha256  54f65299439dab4be8f203588bcefd9b60052ae87d12c6d012f6278a2a111b4e  libubox-d716ac4bc4236031d4c3cc1ed362b502e20e3787-br1.tar.gz

package/libubox/libubox.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-LIBUBOX_VERSION = 551d75b5662cccd0466b990d58136bdf799a804d
+LIBUBOX_VERSION = d716ac4bc4236031d4c3cc1ed362b502e20e3787
 LIBUBOX_SITE = https://git.openwrt.org/project/libubox.git
 LIBUBOX_SITE_METHOD = git
 LIBUBOX_LICENSE = ISC, BSD-3-Clause