fix: truffle test failure

[boolafish]

Seems like there is some dependency trouble. Try blindly solving it with npm audit fix.

closes #652

[kevsul]

Quick update before I give up for now:
The problem is that sometimes calling eth_getBlockByNumber returns a null block (and no error).
It appears to only happen when the provider is remote i.e. using Infura

I think it's an Infura timing issue - we get a notification that a new block has been produced, but when we try to get it, it returns null.

I can "fix" it by hacking a sleep call into the Web3ProviderEngine code:

Web3ProviderEngine.prototype.start = function(cb = noop){
  const self = this

  // trigger start
  self._ready.go()

  // on new block, request block body and emit as events
  self._blockTracker.on('latest', async (blockNumber) => {

    await sleep(1000) // Come on Infura!

    // get block body
    self._getBlockByNumber(blockNumber, (err, block) => {

but obviously that's horrible.

I don't know why this is only showing up now though...

[boolafish]

okay, seems like the new HDWalletProvider would fix this.