[tutorials] suppress cmake warning for find python/sphinx using cmake 3.27 or later (#5924)

* suppress cmake warning for find python/sphinx using cmake 3.27 or later

* change module for find python using cmake 3.12 or later

* fix variables for new find python package

Author: UnaNancyOwen

cmake/Modules/FindSphinx.cmake

@@ -8,10 +8,16 @@
 find_package(PkgConfig QUIET)
 pkg_check_modules(PC_SPHINX sphinx-build)
 
-find_package(PythonInterp)
-
-if(PYTHONINTERP_FOUND)
-  get_filename_component(PYTHON_DIR "${PYTHON_EXECUTABLE}" PATH)
+if(CMAKE_VERSION VERSION_LESS 3.12.0)
+  find_package(PythonInterp)
+  if(PYTHONINTERP_FOUND)
+    get_filename_component(PYTHON_DIR "${PYTHON_EXECUTABLE}" PATH)
+  endif()
+else()
+  find_package(Python)
+  if(Python_Interpreter_FOUND)
+    get_filename_component(PYTHON_DIR "${Python_EXECUTABLE}" PATH)
+  endif()
 endif()
 
 find_program(SPHINX_EXECUTABLE NAMES sphinx-build