deps: upgrade to libuv 1.46.0

Notable changes
- fs: use WTF-8 on Windows: libuv/libuv#2970
- linux: add some more iouring backed fs ops: libuv/libuv#4012

Important bugs fixed
- linux: work around io_uring IORING_OP_CLOSE bug: libuv/libuv#4059
- src: don't run timers if loop is stopped/unref'd: libuv/libuv#4048

PR-URL: #48618
Backport-PR-URL: #49591
Fixes: #48512
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Richard Lau <rlau@redhat.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Yagiz Nizipli <yagiz@nizipli.com>
Reviewed-By: Mohammed Keyvanzadeh <mohammadkeyvanzade94@gmail.com>
PR-URL: #48078

Author: santigimeno

deps/uv/.readthedocs.yaml

@@ -6,6 +6,7 @@ sphinx:
   fail_on_warning: false
 
 build:
+  os: "ubuntu-22.04"
   tools:
     python: "3.9"
 

deps/uv/AUTHORS

@@ -542,3 +542,9 @@ Lewis Russell <me@lewisr.dev>
 sivadeilra <arlie.davis@gmail.com>
 cui fliter <imcusg@gmail.com>
 Mohammed Keyvanzadeh <mohammadkeyvanzade94@gmail.com>
+Niklas Mischkulnig <4586894+mischnic@users.noreply.github.com>
+Stefan Karpinski <stefan@karpinski.org>
+liuxiang88 <94350585+liuxiang88@users.noreply.github.com>
+Jeffrey H. Johnson <trnsz@pobox.com>
+Abdirahim Musse <33973272+abmusse@users.noreply.github.com>
+小明 <7737673+caobug@users.noreply.github.com>