COMP: Set the minimum required CMake version to 3.10.2.
COMP: Set the minimum required CMake version to 3.10.2.

As agreed in:
https://discourse.itk.org/t/cmake-update/870/

Set the `cmake_minimum_required` to version **3.10.2**.

InsightSoftwareConsortium/ITKModuleTemplate,thewtex/ITKModuleTemplate,thewtex/ITKModuleTemplate,InsightSoftwareConsortium/ITKModuleTemplate