Update to NimBLE1.3.0 and improve BLE connectivity

This release updates to NimBLE 1.3.0 and fixes a IRQ issue that was causing random connectivity issues with Android phones.

FYI Gadgetbridge is working on the integration of Pinetime in this branch : https://codeberg.org/Freeyourgadget/Gadgetbridge/src/branch/pinetime-jf