cmake: Reduce minimum CMake version from 3.25 to 3.22

There isn't anything in 3.25 that we actually need, so we can reduce the minimum requirement. 3.22 is commonly available across many package managers.

For a list of the changes in `FetchContent`, see:
https://cmake.org/cmake/help/latest/module/FetchContent.html

Author: RobLoach

CMakeLists.txt

@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.25)
+cmake_minimum_required(VERSION 3.22)
 #this change avoid the warning that appear when we include raylib using Cmake fatch content 
 project(raylib)