libubox: update to Git HEAD (2025-11-14)

a75209f62982 blobmsg: refactor blobmsg_cast_u64/s64
97d1839295e5 github: ci: minor fixes
e8dafede37fc github: ci: add powerpc arch
c1f0024fb052 github: ci: add cmake build and source directories
4dd874d2b412 github: ci: tests: rename test step
7686b12d11ba github: ci: tests: add build/bin to path
be21d12b2bed github: ci: disable json-c tests
af438ba0705f scripts: devel-build: disable json-c tests
240d2d5ef58b tests: shunit2: add test for _jshn_append leading space fix
82cb5fd66af9 libubox: Drop extraneous space when appending values to variable
17143f94dcbf libubox: add a simple build script
5b11fb18dc05 github: ci: add tests

https://github.com/openwrt/libubox/compare/e357be611cd9...a75209f62982

Signed-off-by: Álvaro Fernández Rojas <[email protected]>

package/libs/libubox/Makefile

@@ -5,9 +5,9 @@ PKG_RELEASE=1
 
 PKG_SOURCE_PROTO:=git
 PKG_SOURCE_URL=$(PROJECT_GIT)/project/libubox.git
-PKG_MIRROR_HASH:=09eea2e6f46cc3d481f952e2555b50bc4bb0fadc63cf75e32a8613fcbba1d8c8
-PKG_SOURCE_DATE:=2025-11-03
-PKG_SOURCE_VERSION:=e357be611cd9deb280c61bbdf331f5a85e75a485
+PKG_MIRROR_HASH:=5bd17ef3e681529fda6992d76a7104f2fef81002c2d776c11217e3b99426a669
+PKG_SOURCE_DATE:=2025-11-14
+PKG_SOURCE_VERSION:=a75209f62982f7218f73b9b4fd9b705e19f5f94a
 PKG_ABI_VERSION:=$(call abi_version_str,$(PKG_SOURCE_DATE))
 CMAKE_INSTALL:=1