fix: upgrade multiple dependencies with Snyk

Snyk has created this PR to upgrade:
  - @ganache/secp256k1 from 0.5.0 to 0.5.2.
    See this package in npm: https://www.npmjs.com/package/@ganache/secp256k1
  - emittery from 0.10.0 to 0.13.1.
    See this package in npm: https://www.npmjs.com/package/emittery
  - keccak from 3.0.2 to 3.0.4.
    See this package in npm: https://www.npmjs.com/package/keccak

See this project in Snyk:
https://app.snyk.io/org/sammyfilly/project/ad19f019-3c8a-4b00-84c5-fdbffb9fb897?utm_source=github&utm_medium=referral&page=upgrade-pr