[PATCH 1/2] [cmake] Require minimum CMake version 3.5

[PATCH 1/2] [cmake] Require minimum CMake version 3.5

Soon CMake 4.0 will be released. It requires that projects
set a minimum required CMake version of 3.5. There is a
workaround with an additional flag, but it would is better
to increase the minimum required version.

Gbp-Pq: Name 1351.patch