Update Rust crate iddqd to 0.3.15

Author: oxide-renovate[bot]

Cargo.lock

@@ -18,7 +18,7 @@ clap = { version = "4.5", features = ["derive", "env", "wrap_help"] }
 dropshot = { version = "0.16.4" }
 # has to match dropshot
 http = { version = "1.3.1" }
-iddqd = { version = "0.3.11" , features = ["schemars08"]}
+iddqd = { version = "0.3.15" , features = ["schemars08"]}
 reqwest = { version = "0.12.23", features = ["blocking", "json"] }
 schemars = { version = "0.8.22", features = [ "chrono" ] }
 scim2-rs = { path = "./core" }