Raised cmake version required to 3.12

cmake/CMakeLists.txt

 # Force minimal cmake version
 # Required 3.8 to use source_group TREE 
-cmake_minimum_required(VERSION 3.8.0 FATAL_ERROR)
+# Required 3.12 to use findPython3
+cmake_minimum_required(VERSION 3.12.0 FATAL_ERROR)
 
 file(SHA512 ${CMAKE_SOURCE_DIR}/CMakeLists.txt HASH_TOPLEVEL_CMAKEFILE)
 file(SHA512 ${CMAKE_SOURCE_DIR}/OpenFlipper/cmake/CMakeLists.txt HASH_LATEST_CMAKEFILE)
@@ -82,7 +83,7 @@ set (CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} ${_more_macro_directories})
 # Python support
 # ========================================================================
 
-find_package(Python3 COMPONENTS Development)
+find_package(Python COMPONENTS Development)
 
 if (NOT TARGET pybind11::module OR NOT TARGET pybind11::embed)
     add_subdirectory(OpenFlipper/libs_required/pybind11)