Require CMake 3.24 in BuildSupport/SwiftSyntax/CMakeLists.txt (#7631)

Versions older than 3.24 don't support `GLOBAL` argument of `find_package` and this leads to obscure errors with older versions of CMake. See https://cmake.org/cmake/help/latest/release/3.24.html#commands for the detailed CMake 3.24 changelog. We should specify the required version explicitly to avoid this.

Author: MaxDesiatov

CMakeLists.txt

@@ -10,7 +10,7 @@ if(POLICY CMP0091)
   cmake_policy(SET CMP0091 NEW)
 endif()
 
-cmake_minimum_required(VERSION 3.19)
+cmake_minimum_required(VERSION 3.24)
 
 list(APPEND CMAKE_MODULE_PATH ${CMAKE_CURRENT_SOURCE_DIR}/cmake/modules)