Update dependencies to prevent scrypt not found

[0xGabi]

Happened both on Mac and Linux. Related to this issue: trufflesuite/ganache#134

I locally fixed it with: trufflesuite/ganache#134 (comment)

The current dependency tree for scrypt:

gabi@linux:~/code/aragon/aragon-desktop$ npm ls scrypt
aragon-desktop@0.1.0 /home/gabi/code/aragon/aragon-desktop
├─┬ @aragon/apm@3.1.0-beta.1
│ └─┬ @aragon/os@4.0.1
│   └─┬ truffle-hdwallet-provider@0.0.3
│     └─┬ ethereumjs-wallet@0.6.3
│       └─┬ scrypt.js@0.3.0
│         └── scrypt@6.0.3  deduped
└─┬ web3@1.0.0-beta.37
  └─┬ web3-eth@1.0.0-beta.37
    └─┬ web3-eth-accounts@1.0.0-beta.37
      └─┬ scrypt.js@0.2.0
        └── scrypt@6.0.3 

[0xGabi]

Possible fix: trufflesuite/ganache#426

[stale]

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