Handle optional balance_callback since we have all_updates_callback

[cleivson]

In this line: https://github.com/ccxt/node-binance-api/blob/6e71451cf9189d154711ac6bc5c2b9c5b815c3fa/src/node-binance-api.ts#L2640C13-L2640C49

I believe this callback should also be checked as optional like the others since we have a catch-all callback.

[carlosmiei]

@cleivson Hello, thanks for reporting it, yes I think that makes sense, we're going to fix it soon.

[carlosmiei]

@cleivson We have released a new version with the fix ( node-binance-api@1.0.13) can you please upgrade and try again?