fix duplicate serde dependancy

packages/fullstack/Cargo.toml

@@ -24,7 +24,6 @@ tower-http = { version = "0.4.0", optional = true, features = ["fs", "compressio
 # salvo
 salvo = { version = "0.63.0", optional = true, features = ["serve-static", "websocket", "compression"] }
 http-body-util = { version = "0.1.0-rc.2", optional = true }
-serde = "1.0.159"
 
 # Dioxus + SSR
 dioxus = { workspace = true }