Upgrade @types/hast to 3

[crutchcorn]

Initial checklist

• I read the support docs
• I read the contributing guide
• I agree to follow the code of conduct
• I searched issues and couldn’t find anything (or linked relevant results below)

Problem

When using these with other newer packages that use Hast 3, we get errors due to typing mismatches.

Solution

Upgrade @types/hast to 3. However, I'm not sure if this also requires us to migrate runtime packages as well.

Alternatives

Not alternative, but a volunteer message from me that I'd be happy to work on upgrading deps wherever makes sense in this library. We depends on hast-util-to-string so anything we can do to help; let us know.

[wooorm]

Hey! Everything’s being released. But it takes time to go through 700+ packages.
This is also a types-only change, so you can ts-ignore/ts-expect-error and continue.
You can follow me or occasionally check https://github.com/wooorm to see where it’s currently at.

[wooorm]

Done https://github.com/rehypejs/rehype-minify/releases/tag/7.0.0

[crutchcorn]

You're a legend @wooorm, thanks a million for all of your work