drivers/ninaw10: Add missing external pins 34 and 39.

There are 2 more external pins controlled by the Nina module.

drivers/ninaw10/machine_pin_nina.c

@@ -48,6 +48,8 @@ static uint8_t pin_map[MICROPY_HW_PIN_EXT_COUNT] = {
     27, // LEDR
     25, // LEDG
     26, // LEDB
+    34, // A4
+    39, // A5
     36, // A6
     35, // A7
 };