Replace all instances of Buffer with Uint8Array

[dawsbot]

https://sindresorhus.com/blog/goodbye-nodejs-buffer

[paulmillr]

migrating from sha3 to @noble/hashes would make it easier. it's also smaller and audited

[dawsbot]

migrating from sha3 to @noble/hashes would make it easier. it's also smaller and audited

I'd love some help on this @paulmillr - I pulled in @noble/hashes and tried to replace Buffer in one of the files but it seems the data-types of Uint8Array are not as flexible and I was unable to find a way around this. Would you be open to a PR to help this get started? 🙏

[paulmillr]

@dawsbot what do you mean by "not as flexible"?