Import the cmake_minimum_required bump from the upstream master branch. Fixes: https://autobuild.buildroot.org/results/3fe/3fe0973cad67641d880c460a1fef859443e8a10b Signed-off-by: Florian Larysch <fl@n621.de> Signed-off-by: Julien Olivain <ju.o@free.fr>