Bump type-fest in peerDependencies

[soilSpoon]

https://github.com/sindresorhus/type-fest/releases/tag/v2.0.0

type-fest is 2.0 and there is no problem with compatibility, so bump

[pmmmwh]

No, type-fest v2 does not support Node.js v10 but we support that. I'm not too sure what the proper solution should be, technically it works but it will crash on install due to engine being incompatible.

[soilSpoon]

No, type-fest v2 does not support Node.js v10 but we support that. I'm not too sure what the proper solution should be, technically it works but it will crash on install due to engine being incompatible.

Since you specify it as a range, can't it be 2.x and also 1.x?
I think it's the user's choice.

[pmmmwh]

OK, after sitting on this a bit I think it's fair to allow type-fest v2, but after merging this I'll also add a note in the README warning that v2 only supports node.js 12+.