Move to CMake 3.20.0.
At the Toolchain WG it was decided to move to CMake 3.20.0.
The main reason for increasing CMake version is better toolchain
support.
Better toolchain support is added in the following CMake versions:
- armclang, CMake 3.15
- Intel oneAPI, CMake 3.20
- IAR, CMake 3.15 and 3.20
Signed-off-by: Torsten Rasmussen <Torsten.Rasmussen@nordicsemi.no>
Application demonstrating Bluetooth Low Energy Central role
functionality by scanning for other devices and establishing
connection to upto 62 peripherals with a strong enough
signal.
Signed-off-by: Vinayak Kariappa Chettimada <vich@nordicsemi.no>