fix: updates undici to keep up with latest security release

[asciidisco]

Updates undici to keep up with latest security related release of the 5.x.x. version branch, see undici release info for more information.

npm audit output:

undici  <=5.28.3
Undici's Proxy-Authorization header not cleared on cross-origin redirect for dispatch, request, stream, pipeline - https://github.com/advisories/GHSA-m4v8-wqvr-p9f7
Undici's fetch with integrity option is too lax when algorithm is specified but hash value is in incorrect - https://github.com/advisories/GHSA-9qxr-qj54-h672

[mcollina]

I'm not sure why it's not ranged.

[asciidisco]

@mcollina Thanks. Yeah, as it wasn't ranged I did not want to re-introduce that. I think you pinned it because of the Node 16 compat with this commit

You know unidici way better than I do, but I believe it's semver at the heart, so ranging should be fine.