Move process to dev dependencies

[bgins]

Hello 👋. We recently noticed that some modern bundlers moving away from shimming node built-ins (vitejs/vite#2723 (comment)), and that process is included as a dependency here.

This PR would move process from dependencies to devDependencies. It appears to only be used in tests and benchmarks, and everything builds and tests pass afterwards.

I think this change would be alright, but certainly feel free to decline or request changes if I have overlooked something! 🙏

[welcome]

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[lidel]

@achingbrain sounds like you are the most familiar with this area of js-ipfs?

[jorishermans]

What is the process of this issue?

Important for usage in vitejs ;)

[BigLep]

@Gozala : We're hoping during your tribute week you can review and merge.

[achingbrain]

Good catch, thanks!