Update Rust crate tokio to 1.44.1 (#116)

Co-authored-by: oxide-renovate[bot] <146848827+oxide-renovate[bot]@users.noreply.github.com>

Author: oxide-renovate[bot]

Cargo.toml

@@ -33,7 +33,7 @@ propolis-client = { git = "https://github.com/oxidecomputer/propolis", rev = "fa
 propolis-server-config = { git = "https://github.com/oxidecomputer/propolis", rev = "fae5334bcad5e864794332c6fed5e6bb9ec88831" }
 toml = "0.7"
 libc = "0.2"
-tokio = { version = "1.39.3", features = ["full"] }
+tokio = { version = "1.44.1", features = ["full"] }
 tokio-tungstenite = "0.21"
 futures = "0.3"
 clap = { version = "4.0.28", features = ["color", "derive"] }