[bug] CMAKE_OSX_DEPLOYMENT_TARGET not CACHE

[st751228051]

Describe the bug
ios-cmake-4.4.1, build with "-DPLATFORM=MAC -DARCHS=x86_64", top display 10.13, but actualy -target x86_64-apple-macos13.3.

To Reproduce
Steps to reproduce the behavior:

1. ios-cmake-4.4.1
2. build with "-DPLATFORM=MAC -DARCHS=x86_64"
3. top display "-- Autoconf target triple: x86_64-apple-macosx10.13
   -- Using minimum deployment version: 10.13 (SDK version: 13.3)",
   but bottom actualy "-target x86_64-apple-macos13.3".

Expected behavior
-target x86_64-apple-macos10.13

Environment

• What version of CMake did you run? 3.27.7
• Your faulty CMakeLists.txt here: no

--- Paste here ---

Clue:
https://cmake.org/cmake/help/latest/variable/CMAKE_OSX_DEPLOYMENT_TARGET.html#variable:CMAKE_OSX_DEPLOYMENT_TARGET
This variable should be set as a CACHE entry (or else CMake may remove it while initializing a cache entry of the same name) unless policy CMP0126 is set to NEW.

I change ios.toolchain.cmake Line:829 "set(CMAKE_OSX_DEPLOYMENT_TARGET ${DEPLOYMENT_TARGET})" to "set(CMAKE_OSX_DEPLOYMENT_TARGET ${DEPLOYMENT_TARGET} CACHE STRING "Minimum OS X deployment version")",
then it became ok!

[leetal]

I have now begun adding a test-patch to see if i break anything by caching some variables. Please see #192 if you want to test locally as well :)

[leetal]

Fixed in #192