Update Rust crate tokio to 1.46.1 (#64)

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

Author: oxide-renovate[bot]

Cargo.lock

@@ -10,7 +10,7 @@ members = [
 softnpu = { path = "lib" }
 serde = { version = "1.0.219", features = ["derive"] }
 serde_json = "1.0.140"
-tokio = { version = "1.46.0", features = ["sync", "net"] }
+tokio = { version = "1.46.1", features = ["sync", "net"] }
 anyhow = "1.0.98"
 clap = { version = "4.5.40", features = ["derive", "unstable-styles"] }
 devinfo = { git = "https://github.com/oxidecomputer/devinfo-sys", branch = "main" }