Update Rust crate usdt to 0.6.0

Author: oxide-renovate[bot]

Cargo.lock

@@ -37,5 +37,5 @@ serde = "1.0"
 serde_tokenstream = "0.2"
 syn = "2.0"
 tempfile = "3.3"
-usdt = "0.5.0"
+usdt = "0.6.0"
 xfr = { git = "https://github.com/oxidecomputer/xfr" }