chore: fix derive-more feature selection

Author: robjtede

actix-web/Cargo.toml

@@ -145,7 +145,7 @@ bytes = "1"
 bytestring = "1"
 cfg-if = "1"
 cookie = { version = "0.16", features = ["percent-encode"], optional = true }
-derive_more = { version = "2", features = ["display", "error", "from"] }
+derive_more = { version = "2", features = ["as_ref", "deref", "deref_mut", "display", "error", "from"] }
 encoding_rs = "0.8"
 foldhash = "0.1"
 futures-core = { version = "0.3.17", default-features = false }