Bump libuv to 1.35.0

[squeek502]

Changelog: https://github.com/libuv/libuv/releases/tag/v1.35.0

Despite the minor version bump, there doesn't seem to be any new or changed API's from my reading of the changelog. Let me know if I missed anything in there that we need to update our bindings for.

[squeek502]

Whoops, missed this:

I'm considering libuv/libuv@3d71366 to be semver-minor due to the addition of UV_UDP_MMSG_CHUNK. That would make this release v1.35.0.

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EDIT: Added an (untested) attempt at handling UV_UDP_MMSG_CHUNK based on the Libuv docs. From the commit message:

This is my best guess at how it should be handled; there are no examples or tests in Libuv or Node of how to handle this flag (yet?)

EDIT#2: Asked for clarification: libuv/libuv#2532 (comment)

[SinisterRectus]

Don't worry about documenting the new field. I've been working on an big docs update that should be done before the end of the week.

[squeek502]

I'm not sure the flag is of any use on the Lua side, just thought I'd add it for completeness.