zlog: add cmake 4.x compatibility

Upstream backport.

Signed-off-by: Tianling Shen <cnsztl@immortalwrt.org>

libs/zlog/patches/011-upgrade-cmake-minimum-version.patch

@@ -0,0 +1,20 @@
+From 3715879775f725260aeda14f94887bbc7a007e29 Mon Sep 17 00:00:00 2001
+From: haydenZhou <mfkhao2009@outlook.com>
+Date: Sun, 8 Jun 2025 10:45:05 +0800
+Subject: [PATCH] upgrade cmake minimum version
+
+---
+ CMakeLists.txt | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -1,7 +1,7 @@
+ # create by lsm <lsm@skybility.com>
+ # cmake
+ 
+-cmake_minimum_required(VERSION 2.8.5)
++cmake_minimum_required(VERSION 3.12)
+ 
+ message(STATUS "path : ${CMAKE_FIND_ROOT_PATH}")
+ project(zlog)