Change version number and platform name

Author: facchinm

platform.txt

@@ -4,8 +4,8 @@
 # For more info:
 # https://github.com/arduino/Arduino/wiki/Arduino-IDE-1.5---3rd-party-Hardware-specification
 
-name=Arduino nRF528x Boards (Mbed OS)
-version=1.0.6
+name=Arduino Mbed OS Boards (nRF52840 / STM32H747)
+version=1.2.0
 
 # Compile variables
 # ------------------------