fix: set CMAKE_POLICY_VERSION_MINIMUM for yaml-cpp Windows MSYS2 compatibility

- Set CMAKE_POLICY_VERSION_MINIMUM=3.5 to resolve CMake compatibility issue
- Fixes Windows MSYS2 CLANG64/UCRT64 builds failing with 'Compatibility with CMake < 3.5 has been removed'
- Verified locally: full build and YAML tests pass successfully

Co-Authored-By: Jake Cosme <[email protected]>

Author: devin-ai-integration[bot]

CMakeLists.txt

@@ -102,10 +102,8 @@ if(WIN32 AND (CMAKE_GENERATOR MATCHES "MSYS Makefiles" OR MSYS))
     set(CMAKE_POLICY_DEFAULT_CMP0077 NEW CACHE STRING "Use NEW policy for option() behavior")
 endif()
 
-# Add CMake policy version minimum to handle older CMake versions
-if(CMAKE_VERSION VERSION_LESS "3.5")
-    cmake_policy(VERSION 3.5)
-endif()
+# Set CMake policy version minimum for yaml-cpp compatibility
+set(CMAKE_POLICY_VERSION_MINIMUM 3.5 CACHE STRING "Minimum CMake policy version for yaml-cpp compatibility")
 
 # Disable yaml-cpp tests and tools to avoid build issues
 set(YAML_CPP_BUILD_TESTS OFF CACHE BOOL "Disable yaml-cpp tests")