deps: upgrade to libuv 1.35.0

Notable changes:

• The UV_UDP_MMSG_CHUNK UDP flag has been added.
• Support has been dropped for FreeBSD < 10.
• The FreeBSD and Linux system call logic has been simplified to assume the presence of features covered by libuv's minimum system requirements.
• Listening on IPC pipes is no longer allowed.
• Fix iOS and Android builds.

Checklist

• make -j4 test (UNIX), or vcbuild test (Windows) passes
• commit message follows commit guidelines