deps: bumpd libuv to 1.40.0
deps: bumpd libuv to 1.40.0

PR-URL: https://github.com/nodejs/uvwasi/pull/156
Reviewed-By: Daniel Bevenius <ae63d1d4d7994483a3e520cafec7a829fe25c0a1@gmail.com>

nodejs/uvwasi