Vendor ractor 0.12.4 and upgrade tokio to 1.41.0

Summary:
From release notes:

Ractor v0.12.4 is released!

In this release there are 2 primary changes
1. We're adding the ability to runtime inspect the message type of an untyped `ActorCell` which can be helpful for supervision flows
2. We're also adding helpers for interacting with a supervisor's children (retrieval of the children, stopping them, and draining them) without having to have the supervisor keep additional handles around

Both are in #277

Tokio is being upgraded to add support for `join_all()` in `JoinSet` which `ractor` leverages (easier to upgrade than backport a hack into ractor)

Reviewed By: Imxset21

Differential Revision: D64833735

fbshipit-source-id: 897302bf95467310131348f1ee8c1f766e81f725

third-party/watchman/src/watchman/cli/Cargo.toml

@@ -18,7 +18,7 @@ serde_json = { version = "1.0.125", features = ["float_roundtrip", "unbounded_de
 structopt = "0.3.26"
 sysinfo = "0.30.11"
 tabular = "0.2.0"
-tokio = { version = "1.37.0", features = ["full", "test-util", "tracing"] }
+tokio = { version = "1.41.0", features = ["full", "test-util", "tracing"] }
 watchman_client = { version = "0.9.0", path = "../rust/watchman_client" }
 
 [target.'cfg(target_os = "linux")'.dependencies]