Update __NO_RETURN Macro. Add ARMv8.1-M Support · ARM-software/CMSIS_6@5dc9144

Canceling since a higher priority waiting request for 'Core Checks-refs/pull/85/merge' exists

The operation was canceled.

An error occurred trying to start process '/usr/bin/bash' with working directory '/home/runner/work/CMSIS_6/CMSIS_6/./CMSIS/Core/Test'. No such file or directory