deps: upgrade to libuv 1.46.0
Notable changes
- fs: use WTF-8 on Windows: https://github.com/libuv/libuv/pull/2970
- linux: add some more iouring backed fs ops: https://github.com/libuv/libuv/pull/4012
Important bugs fixed
- linux: work around io_uring IORING_OP_CLOSE bug: https://github.com/libuv/libuv/pull/4059
- src: don't run timers if loop is stopped/unref'd: https://github.com/libuv/libuv/pull/4048
Fixes: