Qt Creator due to the usage of CMake File-API was already requiring
CMake 3.14.
Qt 6.7 now requires CMake version 3.16, thus the version requirement
bump.
Note that Qt SDK is shipping CMake version 3.27.
Fixes: QTCREATORBUG-31079
Change-Id: Ife26d178b80949941cb808a1fbd91389d6d723bc
Reviewed-by: Leena Miettinen <riitta-leena.miettinen@qt.io>
Reviewed-by: Eike Ziller <eike.ziller@qt.io>