codal_app/microbithal: Use deepSleep() interruptable flag.

The new interruptable flag lets the deepSleep function to return
before the milliSeconds time elapses, when the board has been
woken up by a different source.

Author: microbit-carlos

src/codal_app/microbithal.cpp

@@ -129,7 +129,7 @@ void microbit_hal_power_off(void) {
 
 void microbit_hal_power_deep_sleep(bool wake_on_ms, uint32_t ms) {
     if (wake_on_ms) {
-        uBit.power.deepSleep(ms);
+        uBit.power.deepSleep(ms, true);
     } else {
         uBit.power.deepSleep();
     }