PIO STLink Fix

PlatformIO has an older version of STLink. It is unable to communicate with the STM32L MCUs on some Rx's.
Affected RX's:
-(DIY) PP

Swapping out PIO's STLink folder contents with the current STLink will allow using the configurator with these RX's.

Go to your STLink folder

• copy contents of "ST-Link Utility"
  C:\Program Files (x86)\STMicroelectronics\STM32 ST-LINK Utility\ST-LINK Utility

• paste files from "st-link utility" folder into "stlink" folder in your users PIO location
  C:\Users\username\ .platformio\packages\tool-stm32duino