Add missing error-send feature to mlua in lune-std-serde

Author: filiptibell

crates/lune-std-serde/Cargo.toml

@@ -13,7 +13,7 @@ path = "src/lib.rs"
 workspace = true
 
 [dependencies]
-mlua = { version = "0.10.3", features = ["luau", "serialize"] }
+mlua = { version = "0.10.3", features = ["luau", "serialize", "error-send"] }
 
 async-compression = { version = "0.4", features = [
     "futures-io",