update serde-hjson to v0.9

Author: nickelc

Cargo.toml

@@ -28,7 +28,7 @@ nom = "4.0.0"
 toml = { version = "0.5", optional = true }
 serde_json = { version = "1.0.2", optional = true }
 yaml-rust = { version = "0.4", optional = true }
-serde-hjson = { version = "0.8.2", optional = true }
+serde-hjson = { version = "0.9", optional = true }
 rust-ini = { version = "0.13", optional = true }
 
 [dev-dependencies]