libuv: bump to 1.45.0

libuv: bump to 1.45.0

1.45.0
* linux: introduce io_uring support
* src: add new metrics APIs
* unix,win: give thread pool threads an 8 MB stack
* win,unix: change execution order of timers

1.44.2
* loop: better align order-of-events behavior between platforms
* zos: fix fs event not fired if the watched file is moved/removed/recreated
* win: Fix pipe resource leak if closed during connect (and other bugs)
* zos: don't error when killing a zombie process
* macos: avoid posix_spawnp() cwd bug
* kqueue: skip EVFILT_PROC events when invalidating events for an fd.

Signed-off-by: Hirokazu MORIKAWA <morikw2@gmail.com>